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Finding the Fourth Proportional to 51,691.20, 77,536.80 and 41,323.20

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Solution

The fourth proportional to 51,691.20, 77,536.80 and 41,323.20 is: 61,984.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,691.20 : 77,536.80 = 41,323.20 : x
  2. Step 2: Convert to fraction form
    51,691.20/77,536.80 = 41,323.20/x
  3. Step 3: Cross multiply
    51,691.20x = 77,536.80 × 41,323.20
  4. Step 4: Simplify right side
    51,691.20x = 3,204,068,693.76
  5. Step 5: Solve for x
    x = 3,204,068,693.76/51,691.20
  6. Step 6: Final answer
    x = 61,984.80

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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.