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Finding the Fourth Proportional to 202,137,770.70, 303,206,656.05 and 72,749,601.90

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Solution

The fourth proportional to 202,137,770.70, 303,206,656.05 and 72,749,601.90 is: 109,124,402.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,137,770.70 : 303,206,656.05 = 72,749,601.90 : x
  2. Step 2: Convert to fraction form
    202,137,770.70/303,206,656.05 = 72,749,601.90/x
  3. Step 3: Cross multiply
    202,137,770.70x = 303,206,656.05 × 72,749,601.90
  4. Step 4: Simplify right side
    202,137,770.70x = 22,058,163,521,067,728
  5. Step 5: Solve for x
    x = 22,058,163,521,067,728/202,137,770.70
  6. Step 6: Final answer
    x = 109,124,402.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.