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Finding the Fourth Proportional to 74,393.87, 111,549.80 and 38,766.28

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Solution

The fourth proportional to 74,393.87, 111,549.80 and 38,766.28 is: 58,128.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,393.87 : 111,549.80 = 38,766.28 : x
  2. Step 2: Convert to fraction form
    74,393.87/111,549.80 = 38,766.28/x
  3. Step 3: Cross multiply
    74,393.87x = 111,549.80 × 38,766.28
  4. Step 4: Simplify right side
    74,393.87x = 4,324,370,223.00
  5. Step 5: Solve for x
    x = 4,324,370,223.00/74,393.87
  6. Step 6: Final answer
    x = 58,128.04

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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.