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Finding the Fourth Proportional to 92,589.47, 138,942.58 and 36,422.28

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Solution

The fourth proportional to 92,589.47, 138,942.58 and 36,422.28 is: 54,656.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,589.47 : 138,942.58 = 36,422.28 : x
  2. Step 2: Convert to fraction form
    92,589.47/138,942.58 = 36,422.28/x
  3. Step 3: Cross multiply
    92,589.47x = 138,942.58 × 36,422.28
  4. Step 4: Simplify right side
    92,589.47x = 5,060,605,552.68
  5. Step 5: Solve for x
    x = 5,060,605,552.68/92,589.47
  6. Step 6: Final answer
    x = 54,656.38

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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.