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Finding the Fourth Proportional to 58,387.91, 87,609.50 and 34,742.18

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Solution

The fourth proportional to 58,387.91, 87,609.50 and 34,742.18 is: 52,129.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,387.91 : 87,609.50 = 34,742.18 : x
  2. Step 2: Convert to fraction form
    58,387.91/87,609.50 = 34,742.18/x
  3. Step 3: Cross multiply
    58,387.91x = 87,609.50 × 34,742.18
  4. Step 4: Simplify right side
    58,387.91x = 3,043,745,064.02
  5. Step 5: Solve for x
    x = 3,043,745,064.02/58,387.91
  6. Step 6: Final answer
    x = 52,129.72

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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.