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Finding the Fourth Proportional to 80,732.56, 111,393.48 and 48,902.80

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Solution

The fourth proportional to 80,732.56, 111,393.48 and 48,902.80 is: 67,475.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,732.56 : 111,393.48 = 48,902.80 : x
  2. Step 2: Convert to fraction form
    80,732.56/111,393.48 = 48,902.80/x
  3. Step 3: Cross multiply
    80,732.56x = 111,393.48 × 48,902.80
  4. Step 4: Simplify right side
    80,732.56x = 5,447,453,073.74
  5. Step 5: Solve for x
    x = 5,447,453,073.74/80,732.56
  6. Step 6: Final answer
    x = 67,475.29

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1.5x scale

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.