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Finding the Fourth Proportional to 118,959.67, 178,472.45 and 54,937.38

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Solution

The fourth proportional to 118,959.67, 178,472.45 and 54,937.38 is: 82,421.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,959.67 : 178,472.45 = 54,937.38 : x
  2. Step 2: Convert to fraction form
    118,959.67/178,472.45 = 54,937.38/x
  3. Step 3: Cross multiply
    118,959.67x = 178,472.45 × 54,937.38
  4. Step 4: Simplify right side
    118,959.67x = 9,804,808,805.18
  5. Step 5: Solve for x
    x = 9,804,808,805.18/118,959.67
  6. Step 6: Final answer
    x = 82,421.28

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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.