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Finding the Fourth Proportional to 92,449.73, 127,540.11 and 54,189.88

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Solution

The fourth proportional to 92,449.73, 127,540.11 and 54,189.88 is: 74,758.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,449.73 : 127,540.11 = 54,189.88 : x
  2. Step 2: Convert to fraction form
    92,449.73/127,540.11 = 54,189.88/x
  3. Step 3: Cross multiply
    92,449.73x = 127,540.11 × 54,189.88
  4. Step 4: Simplify right side
    92,449.73x = 6,911,382,985.14
  5. Step 5: Solve for x
    x = 6,911,382,985.14/92,449.73
  6. Step 6: Final answer
    x = 74,758.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.