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Finding the Fourth Proportional to 79,708.46, 119,562.48 and 54,672.57

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Solution

The fourth proportional to 79,708.46, 119,562.48 and 54,672.57 is: 82,008.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,708.46 : 119,562.48 = 54,672.57 : x
  2. Step 2: Convert to fraction form
    79,708.46/119,562.48 = 54,672.57/x
  3. Step 3: Cross multiply
    79,708.46x = 119,562.48 × 54,672.57
  4. Step 4: Simplify right side
    79,708.46x = 6,536,788,057.17
  5. Step 5: Solve for x
    x = 6,536,788,057.17/79,708.46
  6. Step 6: Final answer
    x = 82,008.72

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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.