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Finding the Fourth Proportional to 118,472.92, 177,718.56 and 39,587.42

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Solution

The fourth proportional to 118,472.92, 177,718.56 and 39,587.42 is: 59,384.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,472.92 : 177,718.56 = 39,587.42 : x
  2. Step 2: Convert to fraction form
    118,472.92/177,718.56 = 39,587.42/x
  3. Step 3: Cross multiply
    118,472.92x = 177,718.56 × 39,587.42
  4. Step 4: Simplify right side
    118,472.92x = 7,035,419,276.52
  5. Step 5: Solve for x
    x = 7,035,419,276.52/118,472.92
  6. Step 6: Final answer
    x = 59,384.20

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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.