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Finding the Fourth Proportional to 64,747.38, 89,358.21 and 37,898.58

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Solution

The fourth proportional to 64,747.38, 89,358.21 and 37,898.58 is: 52,304.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,747.38 : 89,358.21 = 37,898.58 : x
  2. Step 2: Convert to fraction form
    64,747.38/89,358.21 = 37,898.58/x
  3. Step 3: Cross multiply
    64,747.38x = 89,358.21 × 37,898.58
  4. Step 4: Simplify right side
    64,747.38x = 3,386,549,270.34
  5. Step 5: Solve for x
    x = 3,386,549,270.34/64,747.38
  6. Step 6: Final answer
    x = 52,304.04

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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.