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Finding the Fourth Proportional to 108,672.30, 163,057.05 and 38,601.90

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Solution

The fourth proportional to 108,672.30, 163,057.05 and 38,601.90 is: 57,920.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,672.30 : 163,057.05 = 38,601.90 : x
  2. Step 2: Convert to fraction form
    108,672.30/163,057.05 = 38,601.90/x
  3. Step 3: Cross multiply
    108,672.30x = 163,057.05 × 38,601.90
  4. Step 4: Simplify right side
    108,672.30x = 6,294,311,938.40
  5. Step 5: Solve for x
    x = 6,294,311,938.40/108,672.30
  6. Step 6: Final answer
    x = 57,920.11

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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.