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Finding the Fourth Proportional to 83,531.20, 117,099.20 and 83,531.20

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Solution

The fourth proportional to 83,531.20, 117,099.20 and 83,531.20 is: 117,099.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,531.20 : 117,099.20 = 83,531.20 : x
  2. Step 2: Convert to fraction form
    83,531.20/117,099.20 = 83,531.20/x
  3. Step 3: Cross multiply
    83,531.20x = 117,099.20 × 83,531.20
  4. Step 4: Simplify right side
    83,531.20x = 9,781,436,695.04
  5. Step 5: Solve for x
    x = 9,781,436,695.04/83,531.20
  6. Step 6: Final answer
    x = 117,099.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.