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Finding the Fourth Proportional to 59,899.31, 82,687.62 and 38,688.92

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Solution

The fourth proportional to 59,899.31, 82,687.62 and 38,688.92 is: 53,407.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,899.31 : 82,687.62 = 38,688.92 : x
  2. Step 2: Convert to fraction form
    59,899.31/82,687.62 = 38,688.92/x
  3. Step 3: Cross multiply
    59,899.31x = 82,687.62 × 38,688.92
  4. Step 4: Simplify right side
    59,899.31x = 3,199,094,108.29
  5. Step 5: Solve for x
    x = 3,199,094,108.29/59,899.31
  6. Step 6: Final answer
    x = 53,407.87

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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.