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Finding the Fourth Proportional to 60,651.78, 90,825.75 and 38,398.02

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Solution

The fourth proportional to 60,651.78, 90,825.75 and 38,398.02 is: 57,500.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,651.78 : 90,825.75 = 38,398.02 : x
  2. Step 2: Convert to fraction form
    60,651.78/90,825.75 = 38,398.02/x
  3. Step 3: Cross multiply
    60,651.78x = 90,825.75 × 38,398.02
  4. Step 4: Simplify right side
    60,651.78x = 3,487,528,965.02
  5. Step 5: Solve for x
    x = 3,487,528,965.02/60,651.78
  6. Step 6: Final answer
    x = 57,500.85

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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.