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Finding the Fourth Proportional to 108,371.20, 162,556.80 and 49,322.20

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Solution

The fourth proportional to 108,371.20, 162,556.80 and 49,322.20 is: 73,983.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,371.20 : 162,556.80 = 49,322.20 : x
  2. Step 2: Convert to fraction form
    108,371.20/162,556.80 = 49,322.20/x
  3. Step 3: Cross multiply
    108,371.20x = 162,556.80 × 49,322.20
  4. Step 4: Simplify right side
    108,371.20x = 8,017,659,000.96
  5. Step 5: Solve for x
    x = 8,017,659,000.96/108,371.20
  6. Step 6: Final answer
    x = 73,983.30

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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.