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Finding the Fourth Proportional to 118,472.64, 177,718.13 and 39,587.14

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Solution

The fourth proportional to 118,472.64, 177,718.13 and 39,587.14 is: 59,383.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,472.64 : 177,718.13 = 39,587.14 : x
  2. Step 2: Convert to fraction form
    118,472.64/177,718.13 = 39,587.14/x
  3. Step 3: Cross multiply
    118,472.64x = 177,718.13 × 39,587.14
  4. Step 4: Simplify right side
    118,472.64x = 7,035,352,888.19
  5. Step 5: Solve for x
    x = 7,035,352,888.19/118,472.64
  6. Step 6: Final answer
    x = 59,383.78

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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.