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Finding the Fourth Proportional to 75,040.40, 112,414.80 and 41,700.80

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Solution

The fourth proportional to 75,040.40, 112,414.80 and 41,700.80 is: 62,470.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,040.40 : 112,414.80 = 41,700.80 : x
  2. Step 2: Convert to fraction form
    75,040.40/112,414.80 = 41,700.80/x
  3. Step 3: Cross multiply
    75,040.40x = 112,414.80 × 41,700.80
  4. Step 4: Simplify right side
    75,040.40x = 4,687,787,091.84
  5. Step 5: Solve for x
    x = 4,687,787,091.84/75,040.40
  6. Step 6: Final answer
    x = 62,470.18

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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.