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Finding the Fourth Proportional to 104,431.80, 156,734.10 and 48,358.20

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Solution

The fourth proportional to 104,431.80, 156,734.10 and 48,358.20 is: 72,577.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,431.80 : 156,734.10 = 48,358.20 : x
  2. Step 2: Convert to fraction form
    104,431.80/156,734.10 = 48,358.20/x
  3. Step 3: Cross multiply
    104,431.80x = 156,734.10 × 48,358.20
  4. Step 4: Simplify right side
    104,431.80x = 7,579,378,954.62
  5. Step 5: Solve for x
    x = 7,579,378,954.62/104,431.80
  6. Step 6: Final answer
    x = 72,577.31

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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.