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Finding the Fourth Proportional to 67,139.70, 100,588.05 and 32,001.90

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Solution

The fourth proportional to 67,139.70, 100,588.05 and 32,001.90 is: 47,944.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,139.70 : 100,588.05 = 32,001.90 : x
  2. Step 2: Convert to fraction form
    67,139.70/100,588.05 = 32,001.90/x
  3. Step 3: Cross multiply
    67,139.70x = 100,588.05 × 32,001.90
  4. Step 4: Simplify right side
    67,139.70x = 3,219,008,717.30
  5. Step 5: Solve for x
    x = 3,219,008,717.30/67,139.70
  6. Step 6: Final answer
    x = 47,944.94

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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.