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Finding the Fourth Proportional to 62,890.47, 86,718.02 and 48,517.65

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Solution

The fourth proportional to 62,890.47, 86,718.02 and 48,517.65 is: 66,899.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,890.47 : 86,718.02 = 48,517.65 : x
  2. Step 2: Convert to fraction form
    62,890.47/86,718.02 = 48,517.65/x
  3. Step 3: Cross multiply
    62,890.47x = 86,718.02 × 48,517.65
  4. Step 4: Simplify right side
    62,890.47x = 4,207,354,300.46
  5. Step 5: Solve for x
    x = 4,207,354,300.46/62,890.47
  6. Step 6: Final answer
    x = 66,899.71

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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.