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Finding the Fourth Proportional to 62,765.76, 86,616.96 and 34,470.72

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Solution

The fourth proportional to 62,765.76, 86,616.96 and 34,470.72 is: 47,569.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,765.76 : 86,616.96 = 34,470.72 : x
  2. Step 2: Convert to fraction form
    62,765.76/86,616.96 = 34,470.72/x
  3. Step 3: Cross multiply
    62,765.76x = 86,616.96 × 34,470.72
  4. Step 4: Simplify right side
    62,765.76x = 2,985,748,975.41
  5. Step 5: Solve for x
    x = 2,985,748,975.41/62,765.76
  6. Step 6: Final answer
    x = 47,569.71

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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.