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Finding the Fourth Proportional to 83,909.53, 125,864.63 and 33,990.58

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Solution

The fourth proportional to 83,909.53, 125,864.63 and 33,990.58 is: 50,986.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,909.53 : 125,864.63 = 33,990.58 : x
  2. Step 2: Convert to fraction form
    83,909.53/125,864.63 = 33,990.58/x
  3. Step 3: Cross multiply
    83,909.53x = 125,864.63 × 33,990.58
  4. Step 4: Simplify right side
    83,909.53x = 4,278,211,545.50
  5. Step 5: Solve for x
    x = 4,278,211,545.50/83,909.53
  6. Step 6: Final answer
    x = 50,986.00

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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.