A 58-year-old man from rural Maharashtra presents with a 4-day history of fever (39.5°C), productive cough with rusty-colored sputum, and pleuritic chest pain. On examination, he has tachypnea (RR 28/min), dullness to percussion, bronchial breath sounds, and increased tactile fremitus over the right hemithorax. Chest X-ray shows the finding marked **A** — right middle lobe consolidation with air bronchograms and loss of the right heart border. Blood cultures are pending. Which of the following is the MOST LIKELY bacterial pathogen responsible for this presentation?
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