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Finding the Fourth Proportional to 96,978.43, 133,892.74 and 62,538.56

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Solution

The fourth proportional to 96,978.43, 133,892.74 and 62,538.56 is: 86,343.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,978.43 : 133,892.74 = 62,538.56 : x
  2. Step 2: Convert to fraction form
    96,978.43/133,892.74 = 62,538.56/x
  3. Step 3: Cross multiply
    96,978.43x = 133,892.74 × 62,538.56
  4. Step 4: Simplify right side
    96,978.43x = 8,373,459,154.05
  5. Step 5: Solve for x
    x = 8,373,459,154.05/96,978.43
  6. Step 6: Final answer
    x = 86,343.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.