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Finding the Fourth Proportional to 91,911,990.80, 137,708,553.90 and 59,547,233.90

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Solution

The fourth proportional to 91,911,990.80, 137,708,553.90 and 59,547,233.90 is: 89,217,559.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,911,990.80 : 137,708,553.90 = 59,547,233.90 : x
  2. Step 2: Convert to fraction form
    91,911,990.80/137,708,553.90 = 59,547,233.90/x
  3. Step 3: Cross multiply
    91,911,990.80x = 137,708,553.90 × 59,547,233.90
  4. Step 4: Simplify right side
    91,911,990.80x = 8,200,163,469,114,057
  5. Step 5: Solve for x
    x = 8,200,163,469,114,057/91,911,990.80
  6. Step 6: Final answer
    x = 89,217,559.08

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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.