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Finding the Fourth Proportional to 10,387,515.30, 15,581,272.95 and 10,387,515.30

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Solution

The fourth proportional to 10,387,515.30, 15,581,272.95 and 10,387,515.30 is: 15,581,272.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,387,515.30 : 15,581,272.95 = 10,387,515.30 : x
  2. Step 2: Convert to fraction form
    10,387,515.30/15,581,272.95 = 10,387,515.30/x
  3. Step 3: Cross multiply
    10,387,515.30x = 15,581,272.95 × 10,387,515.30
  4. Step 4: Simplify right side
    10,387,515.30x = 161,850,711,161,601.12
  5. Step 5: Solve for x
    x = 161,850,711,161,601.12/10,387,515.30
  6. Step 6: Final answer
    x = 15,581,272.95

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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.