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Finding the Fourth Proportional to 72,461.20, 108,575.16 and 44,700.88

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Solution

The fourth proportional to 72,461.20, 108,575.16 and 44,700.88 is: 66,979.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,461.20 : 108,575.16 = 44,700.88 : x
  2. Step 2: Convert to fraction form
    72,461.20/108,575.16 = 44,700.88/x
  3. Step 3: Cross multiply
    72,461.20x = 108,575.16 × 44,700.88
  4. Step 4: Simplify right side
    72,461.20x = 4,853,405,198.14
  5. Step 5: Solve for x
    x = 4,853,405,198.14/72,461.20
  6. Step 6: Final answer
    x = 66,979.37

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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.