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Finding the Fourth Proportional to 108,508.90, 162,868.18 and 52,388.43

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Solution

The fourth proportional to 108,508.90, 162,868.18 and 52,388.43 is: 78,633.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,508.90 : 162,868.18 = 52,388.43 : x
  2. Step 2: Convert to fraction form
    108,508.90/162,868.18 = 52,388.43/x
  3. Step 3: Cross multiply
    108,508.90x = 162,868.18 × 52,388.43
  4. Step 4: Simplify right side
    108,508.90x = 8,532,407,603.66
  5. Step 5: Solve for x
    x = 8,532,407,603.66/108,508.90
  6. Step 6: Final answer
    x = 78,633.25

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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.