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Finding the Fourth Proportional to 91,813,337.55, 137,720,006.33 and 91,813,337.55

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Solution

The fourth proportional to 91,813,337.55, 137,720,006.33 and 91,813,337.55 is: 137,720,006.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,813,337.55 : 137,720,006.33 = 91,813,337.55 : x
  2. Step 2: Convert to fraction form
    91,813,337.55/137,720,006.33 = 91,813,337.55/x
  3. Step 3: Cross multiply
    91,813,337.55x = 137,720,006.33 × 91,813,337.55
  4. Step 4: Simplify right side
    91,813,337.55x = 12,644,533,428,105,358
  5. Step 5: Solve for x
    x = 12,644,533,428,105,358/91,813,337.55
  6. Step 6: Final answer
    x = 137,720,006.33

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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.