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Finding the Fourth Proportional to 67,581.80, 93,275.54 and 39,291.56

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Solution

The fourth proportional to 67,581.80, 93,275.54 and 39,291.56 is: 54,229.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,581.80 : 93,275.54 = 39,291.56 : x
  2. Step 2: Convert to fraction form
    67,581.80/93,275.54 = 39,291.56/x
  3. Step 3: Cross multiply
    67,581.80x = 93,275.54 × 39,291.56
  4. Step 4: Simplify right side
    67,581.80x = 3,664,941,476.44
  5. Step 5: Solve for x
    x = 3,664,941,476.44/67,581.80
  6. Step 6: Final answer
    x = 54,229.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.