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Finding the Fourth Proportional to 60,721.90, 91,072.55 and 16,338.76

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Solution

The fourth proportional to 60,721.90, 91,072.55 and 16,338.76 is: 24,505.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,721.90 : 91,072.55 = 16,338.76 : x
  2. Step 2: Convert to fraction form
    60,721.90/91,072.55 = 16,338.76/x
  3. Step 3: Cross multiply
    60,721.90x = 91,072.55 × 16,338.76
  4. Step 4: Simplify right side
    60,721.90x = 1,488,012,862.49
  5. Step 5: Solve for x
    x = 1,488,012,862.49/60,721.90
  6. Step 6: Final answer
    x = 24,505.37

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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.