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Finding the Fourth Proportional to 79,600.40, 119,478.84 and 60,704.72

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Solution

The fourth proportional to 79,600.40, 119,478.84 and 60,704.72 is: 91,116.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,600.40 : 119,478.84 = 60,704.72 : x
  2. Step 2: Convert to fraction form
    79,600.40/119,478.84 = 60,704.72/x
  3. Step 3: Cross multiply
    79,600.40x = 119,478.84 × 60,704.72
  4. Step 4: Simplify right side
    79,600.40x = 7,252,929,528.12
  5. Step 5: Solve for x
    x = 7,252,929,528.12/79,600.40
  6. Step 6: Final answer
    x = 91,116.75

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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.