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Finding the Fourth Proportional to 104,367.80, 156,638.10 and 48,294.20

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Solution

The fourth proportional to 104,367.80, 156,638.10 and 48,294.20 is: 72,481.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,367.80 : 156,638.10 = 48,294.20 : x
  2. Step 2: Convert to fraction form
    104,367.80/156,638.10 = 48,294.20/x
  3. Step 3: Cross multiply
    104,367.80x = 156,638.10 × 48,294.20
  4. Step 4: Simplify right side
    104,367.80x = 7,564,711,729.02
  5. Step 5: Solve for x
    x = 7,564,711,729.02/104,367.80
  6. Step 6: Final answer
    x = 72,481.28

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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.