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Finding the Fourth Proportional to 73,691.40, 110,301.90 and 58,139.40

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Solution

The fourth proportional to 73,691.40, 110,301.90 and 58,139.40 is: 87,023.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,691.40 : 110,301.90 = 58,139.40 : x
  2. Step 2: Convert to fraction form
    73,691.40/110,301.90 = 58,139.40/x
  3. Step 3: Cross multiply
    73,691.40x = 110,301.90 × 58,139.40
  4. Step 4: Simplify right side
    73,691.40x = 6,412,886,284.86
  5. Step 5: Solve for x
    x = 6,412,886,284.86/73,691.40
  6. Step 6: Final answer
    x = 87,023.54

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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.