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Finding the Fourth Proportional to 83,041.91, 124,599.31 and 43,589.80

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Solution

The fourth proportional to 83,041.91, 124,599.31 and 43,589.80 is: 65,403.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,041.91 : 124,599.31 = 43,589.80 : x
  2. Step 2: Convert to fraction form
    83,041.91/124,599.31 = 43,589.80/x
  3. Step 3: Cross multiply
    83,041.91x = 124,599.31 × 43,589.80
  4. Step 4: Simplify right side
    83,041.91x = 5,431,258,594.13
  5. Step 5: Solve for x
    x = 5,431,258,594.13/83,041.91
  6. Step 6: Final answer
    x = 65,403.83

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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.