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Finding the Fourth Proportional to 141,605.91, 212,540.13 and 71,534.43

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Solution

The fourth proportional to 141,605.91, 212,540.13 and 71,534.43 is: 107,367.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,605.91 : 212,540.13 = 71,534.43 : x
  2. Step 2: Convert to fraction form
    141,605.91/212,540.13 = 71,534.43/x
  3. Step 3: Cross multiply
    141,605.91x = 212,540.13 × 71,534.43
  4. Step 4: Simplify right side
    141,605.91x = 15,203,937,051.68
  5. Step 5: Solve for x
    x = 15,203,937,051.68/141,605.91
  6. Step 6: Final answer
    x = 107,367.96

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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.