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Finding the Fourth Proportional to 83,244.80, 124,982.40 and 65,734.40

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Solution

The fourth proportional to 83,244.80, 124,982.40 and 65,734.40 is: 98,692.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,244.80 : 124,982.40 = 65,734.40 : x
  2. Step 2: Convert to fraction form
    83,244.80/124,982.40 = 65,734.40/x
  3. Step 3: Cross multiply
    83,244.80x = 124,982.40 × 65,734.40
  4. Step 4: Simplify right side
    83,244.80x = 8,215,643,074.56
  5. Step 5: Solve for x
    x = 8,215,643,074.56/83,244.80
  6. Step 6: Final answer
    x = 98,692.57

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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.