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Finding the Fourth Proportional to 62,785.53, 86,643.68 and 34,490.61

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Solution

The fourth proportional to 62,785.53, 86,643.68 and 34,490.61 is: 47,596.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,785.53 : 86,643.68 = 34,490.61 : x
  2. Step 2: Convert to fraction form
    62,785.53/86,643.68 = 34,490.61/x
  3. Step 3: Cross multiply
    62,785.53x = 86,643.68 × 34,490.61
  4. Step 4: Simplify right side
    62,785.53x = 2,988,393,203.39
  5. Step 5: Solve for x
    x = 2,988,393,203.39/62,785.53
  6. Step 6: Final answer
    x = 47,596.85

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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.