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Finding the Fourth Proportional to 74,932.40, 103,401.72 and 41,397.68

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Solution

The fourth proportional to 74,932.40, 103,401.72 and 41,397.68 is: 57,126.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,932.40 : 103,401.72 = 41,397.68 : x
  2. Step 2: Convert to fraction form
    74,932.40/103,401.72 = 41,397.68/x
  3. Step 3: Cross multiply
    74,932.40x = 103,401.72 × 41,397.68
  4. Step 4: Simplify right side
    74,932.40x = 4,280,591,316.01
  5. Step 5: Solve for x
    x = 4,280,591,316.01/74,932.40
  6. Step 6: Final answer
    x = 57,126.04

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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.