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Finding the Fourth Proportional to 118,397.95, 177,472.88 and 55,165.94

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Solution

The fourth proportional to 118,397.95, 177,472.88 and 55,165.94 is: 82,691.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,397.95 : 177,472.88 = 55,165.94 : x
  2. Step 2: Convert to fraction form
    118,397.95/177,472.88 = 55,165.94/x
  3. Step 3: Cross multiply
    118,397.95x = 177,472.88 × 55,165.94
  4. Step 4: Simplify right side
    118,397.95x = 9,790,457,569.22
  5. Step 5: Solve for x
    x = 9,790,457,569.22/118,397.95
  6. Step 6: Final answer
    x = 82,691.11

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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.