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Finding the Fourth Proportional to 169,446.10, 254,003.88 and 80,675.76

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Solution

The fourth proportional to 169,446.10, 254,003.88 and 80,675.76 is: 120,934.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,446.10 : 254,003.88 = 80,675.76 : x
  2. Step 2: Convert to fraction form
    169,446.10/254,003.88 = 80,675.76/x
  3. Step 3: Cross multiply
    169,446.10x = 254,003.88 × 80,675.76
  4. Step 4: Simplify right side
    169,446.10x = 20,491,956,061.95
  5. Step 5: Solve for x
    x = 20,491,956,061.95/169,446.10
  6. Step 6: Final answer
    x = 120,934.95

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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.