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Finding the Fourth Proportional to 51,559.68, 77,227.20 and 31,843.20

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Solution

The fourth proportional to 51,559.68, 77,227.20 and 31,843.20 is: 47,695.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,559.68 : 77,227.20 = 31,843.20 : x
  2. Step 2: Convert to fraction form
    51,559.68/77,227.20 = 31,843.20/x
  3. Step 3: Cross multiply
    51,559.68x = 77,227.20 × 31,843.20
  4. Step 4: Simplify right side
    51,559.68x = 2,459,161,175.04
  5. Step 5: Solve for x
    x = 2,459,161,175.04/51,559.68
  6. Step 6: Final answer
    x = 47,695.43

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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.