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Finding the Fourth Proportional to 67,722.40, 101,389.20 and 41,478.40

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Solution

The fourth proportional to 67,722.40, 101,389.20 and 41,478.40 is: 62,098.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,722.40 : 101,389.20 = 41,478.40 : x
  2. Step 2: Convert to fraction form
    67,722.40/101,389.20 = 41,478.40/x
  3. Step 3: Cross multiply
    67,722.40x = 101,389.20 × 41,478.40
  4. Step 4: Simplify right side
    67,722.40x = 4,205,461,793.28
  5. Step 5: Solve for x
    x = 4,205,461,793.28/67,722.40
  6. Step 6: Final answer
    x = 62,098.53

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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.