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Finding the Fourth Proportional to 57,417.50, 86,127.86 and 15,864.50

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Solution

The fourth proportional to 57,417.50, 86,127.86 and 15,864.50 is: 23,797.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,417.50 : 86,127.86 = 15,864.50 : x
  2. Step 2: Convert to fraction form
    57,417.50/86,127.86 = 15,864.50/x
  3. Step 3: Cross multiply
    57,417.50x = 86,127.86 × 15,864.50
  4. Step 4: Simplify right side
    57,417.50x = 1,366,375,434.97
  5. Step 5: Solve for x
    x = 1,366,375,434.97/57,417.50
  6. Step 6: Final answer
    x = 23,797.19

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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.