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Finding the Fourth Proportional to 48,659.70, 72,979.17 and 15,382.38

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Solution

The fourth proportional to 48,659.70, 72,979.17 and 15,382.38 is: 23,070.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,659.70 : 72,979.17 = 15,382.38 : x
  2. Step 2: Convert to fraction form
    48,659.70/72,979.17 = 15,382.38/x
  3. Step 3: Cross multiply
    48,659.70x = 72,979.17 × 15,382.38
  4. Step 4: Simplify right side
    48,659.70x = 1,122,593,325.02
  5. Step 5: Solve for x
    x = 1,122,593,325.02/48,659.70
  6. Step 6: Final answer
    x = 23,070.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.