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Finding the Fourth Proportional to 62,719.76, 86,593.82 and 38,871.76

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Solution

The fourth proportional to 62,719.76, 86,593.82 and 38,871.76 is: 53,668.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,719.76 : 86,593.82 = 38,871.76 : x
  2. Step 2: Convert to fraction form
    62,719.76/86,593.82 = 38,871.76/x
  3. Step 3: Cross multiply
    62,719.76x = 86,593.82 × 38,871.76
  4. Step 4: Simplify right side
    62,719.76x = 3,366,054,188.52
  5. Step 5: Solve for x
    x = 3,366,054,188.52/62,719.76
  6. Step 6: Final answer
    x = 53,668.16

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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.