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Finding the Fourth Proportional to 67,364.40, 100,981.80 and 52,363.20

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Solution

The fourth proportional to 67,364.40, 100,981.80 and 52,363.20 is: 78,494.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,364.40 : 100,981.80 = 52,363.20 : x
  2. Step 2: Convert to fraction form
    67,364.40/100,981.80 = 52,363.20/x
  3. Step 3: Cross multiply
    67,364.40x = 100,981.80 × 52,363.20
  4. Step 4: Simplify right side
    67,364.40x = 5,287,730,189.76
  5. Step 5: Solve for x
    x = 5,287,730,189.76/67,364.40
  6. Step 6: Final answer
    x = 78,494.43

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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.