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Finding the Fourth Proportional to 108,422.90, 162,662.70 and 41,865.20

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Solution

The fourth proportional to 108,422.90, 162,662.70 and 41,865.20 is: 62,808.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,422.90 : 162,662.70 = 41,865.20 : x
  2. Step 2: Convert to fraction form
    108,422.90/162,662.70 = 41,865.20/x
  3. Step 3: Cross multiply
    108,422.90x = 162,662.70 × 41,865.20
  4. Step 4: Simplify right side
    108,422.90x = 6,809,906,468.04
  5. Step 5: Solve for x
    x = 6,809,906,468.04/108,422.90
  6. Step 6: Final answer
    x = 62,808.75

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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.