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Finding the Fourth Proportional to 113,648.87, 156,836.55 and 62,663.42

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Solution

The fourth proportional to 113,648.87, 156,836.55 and 62,663.42 is: 86,476.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,648.87 : 156,836.55 = 62,663.42 : x
  2. Step 2: Convert to fraction form
    113,648.87/156,836.55 = 62,663.42/x
  3. Step 3: Cross multiply
    113,648.87x = 156,836.55 × 62,663.42
  4. Step 4: Simplify right side
    113,648.87x = 9,827,915,231.08
  5. Step 5: Solve for x
    x = 9,827,915,231.08/113,648.87
  6. Step 6: Final answer
    x = 86,476.13

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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.