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Finding the Fourth Proportional to 57,718.92, 86,593.68 and 18,276.72

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Solution

The fourth proportional to 57,718.92, 86,593.68 and 18,276.72 is: 27,419.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,718.92 : 86,593.68 = 18,276.72 : x
  2. Step 2: Convert to fraction form
    57,718.92/86,593.68 = 18,276.72/x
  3. Step 3: Cross multiply
    57,718.92x = 86,593.68 × 18,276.72
  4. Step 4: Simplify right side
    57,718.92x = 1,582,648,443.13
  5. Step 5: Solve for x
    x = 1,582,648,443.13/57,718.92
  6. Step 6: Final answer
    x = 27,419.92

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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.