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Finding the Fourth Proportional to 110,540.70, 152,425.70 and 74,668.43

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Solution

The fourth proportional to 110,540.70, 152,425.70 and 74,668.43 is: 102,961.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,540.70 : 152,425.70 = 74,668.43 : x
  2. Step 2: Convert to fraction form
    110,540.70/152,425.70 = 74,668.43/x
  3. Step 3: Cross multiply
    110,540.70x = 152,425.70 × 74,668.43
  4. Step 4: Simplify right side
    110,540.70x = 11,381,387,998.38
  5. Step 5: Solve for x
    x = 11,381,387,998.38/110,540.70
  6. Step 6: Final answer
    x = 102,961.06

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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.