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Finding the Fourth Proportional to 40,959.20, 61,438.80 and 32,502.80

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Solution

The fourth proportional to 40,959.20, 61,438.80 and 32,502.80 is: 48,754.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,959.20 : 61,438.80 = 32,502.80 : x
  2. Step 2: Convert to fraction form
    40,959.20/61,438.80 = 32,502.80/x
  3. Step 3: Cross multiply
    40,959.20x = 61,438.80 × 32,502.80
  4. Step 4: Simplify right side
    40,959.20x = 1,996,933,028.64
  5. Step 5: Solve for x
    x = 1,996,933,028.64/40,959.20
  6. Step 6: Final answer
    x = 48,754.20

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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.