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Finding the Fourth Proportional to 108,328.70, 162,589.05 and 63,899.90

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Solution

The fourth proportional to 108,328.70, 162,589.05 and 63,899.90 is: 95,906.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,328.70 : 162,589.05 = 63,899.90 : x
  2. Step 2: Convert to fraction form
    108,328.70/162,589.05 = 63,899.90/x
  3. Step 3: Cross multiply
    108,328.70x = 162,589.05 × 63,899.90
  4. Step 4: Simplify right side
    108,328.70x = 10,389,424,036.10
  5. Step 5: Solve for x
    x = 10,389,424,036.10/108,328.70
  6. Step 6: Final answer
    x = 95,906.48

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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.