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Finding the Fourth Proportional to 62,046.40, 85,665.04 and 47,680.56

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Solution

The fourth proportional to 62,046.40, 85,665.04 and 47,680.56 is: 65,830.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,046.40 : 85,665.04 = 47,680.56 : x
  2. Step 2: Convert to fraction form
    62,046.40/85,665.04 = 47,680.56/x
  3. Step 3: Cross multiply
    62,046.40x = 85,665.04 × 47,680.56
  4. Step 4: Simplify right side
    62,046.40x = 4,084,557,079.62
  5. Step 5: Solve for x
    x = 4,084,557,079.62/62,046.40
  6. Step 6: Final answer
    x = 65,830.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.