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Finding the Fourth Proportional to 108,585.31, 162,764.29 and 45,441.61

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Solution

The fourth proportional to 108,585.31, 162,764.29 and 45,441.61 is: 68,114.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,585.31 : 162,764.29 = 45,441.61 : x
  2. Step 2: Convert to fraction form
    108,585.31/162,764.29 = 45,441.61/x
  3. Step 3: Cross multiply
    108,585.31x = 162,764.29 × 45,441.61
  4. Step 4: Simplify right side
    108,585.31x = 7,396,270,782.39
  5. Step 5: Solve for x
    x = 7,396,270,782.39/108,585.31
  6. Step 6: Final answer
    x = 68,114.84

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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.