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Finding the Fourth Proportional to 118,691.52, 178,084.08 and 52,085.28

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Solution

The fourth proportional to 118,691.52, 178,084.08 and 52,085.28 is: 78,148.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,691.52 : 178,084.08 = 52,085.28 : x
  2. Step 2: Convert to fraction form
    118,691.52/178,084.08 = 52,085.28/x
  3. Step 3: Cross multiply
    118,691.52x = 178,084.08 × 52,085.28
  4. Step 4: Simplify right side
    118,691.52x = 9,275,559,170.34
  5. Step 5: Solve for x
    x = 9,275,559,170.34/118,691.52
  6. Step 6: Final answer
    x = 78,148.46

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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.