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Finding the Fourth Proportional to 48,139.92, 71,890.02 and 47,618.64

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Solution

The fourth proportional to 48,139.92, 71,890.02 and 47,618.64 is: 71,111.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,139.92 : 71,890.02 = 47,618.64 : x
  2. Step 2: Convert to fraction form
    48,139.92/71,890.02 = 47,618.64/x
  3. Step 3: Cross multiply
    48,139.92x = 71,890.02 × 47,618.64
  4. Step 4: Simplify right side
    48,139.92x = 3,423,304,981.97
  5. Step 5: Solve for x
    x = 3,423,304,981.97/48,139.92
  6. Step 6: Final answer
    x = 71,111.56

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.