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Finding the Fourth Proportional to 62,761.71, 94,142.57 and 18,388.47

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Solution

The fourth proportional to 62,761.71, 94,142.57 and 18,388.47 is: 27,582.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,761.71 : 94,142.57 = 18,388.47 : x
  2. Step 2: Convert to fraction form
    62,761.71/94,142.57 = 18,388.47/x
  3. Step 3: Cross multiply
    62,761.71x = 94,142.57 × 18,388.47
  4. Step 4: Simplify right side
    62,761.71x = 1,731,137,824.17
  5. Step 5: Solve for x
    x = 1,731,137,824.17/62,761.71
  6. Step 6: Final answer
    x = 27,582.71

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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.