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Finding the Fourth Proportional to 83,656.80, 125,582.40 and 83,073.60

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Solution

The fourth proportional to 83,656.80, 125,582.40 and 83,073.60 is: 124,706.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,656.80 : 125,582.40 = 83,073.60 : x
  2. Step 2: Convert to fraction form
    83,656.80/125,582.40 = 83,073.60/x
  3. Step 3: Cross multiply
    83,656.80x = 125,582.40 × 83,073.60
  4. Step 4: Simplify right side
    83,656.80x = 10,432,582,064.64
  5. Step 5: Solve for x
    x = 10,432,582,064.64/83,656.80
  6. Step 6: Final answer
    x = 124,706.92

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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.