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Finding the Fourth Proportional to 42,541.44, 63,812.15 and 11,375.88

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Solution

The fourth proportional to 42,541.44, 63,812.15 and 11,375.88 is: 17,063.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,541.44 : 63,812.15 = 11,375.88 : x
  2. Step 2: Convert to fraction form
    42,541.44/63,812.15 = 11,375.88/x
  3. Step 3: Cross multiply
    42,541.44x = 63,812.15 × 11,375.88
  4. Step 4: Simplify right side
    42,541.44x = 725,919,360.94
  5. Step 5: Solve for x
    x = 725,919,360.94/42,541.44
  6. Step 6: Final answer
    x = 17,063.82

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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.