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Finding the Fourth Proportional to 80,689.64, 111,343.17 and 44,873.90

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Solution

The fourth proportional to 80,689.64, 111,343.17 and 44,873.90 is: 61,921.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,689.64 : 111,343.17 = 44,873.90 : x
  2. Step 2: Convert to fraction form
    80,689.64/111,343.17 = 44,873.90/x
  3. Step 3: Cross multiply
    80,689.64x = 111,343.17 × 44,873.90
  4. Step 4: Simplify right side
    80,689.64x = 4,996,402,276.26
  5. Step 5: Solve for x
    x = 4,996,402,276.26/80,689.64
  6. Step 6: Final answer
    x = 61,921.24

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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.