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Finding the Fourth Proportional to 58,712.40, 87,918.24 and 32,387.88

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Solution

The fourth proportional to 58,712.40, 87,918.24 and 32,387.88 is: 48,498.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,712.40 : 87,918.24 = 32,387.88 : x
  2. Step 2: Convert to fraction form
    58,712.40/87,918.24 = 32,387.88/x
  3. Step 3: Cross multiply
    58,712.40x = 87,918.24 × 32,387.88
  4. Step 4: Simplify right side
    58,712.40x = 2,847,485,406.93
  5. Step 5: Solve for x
    x = 2,847,485,406.93/58,712.40
  6. Step 6: Final answer
    x = 48,498.88

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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.