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Finding the Fourth Proportional to 99,630.80, 149,446.20 and 92,027.60

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Solution

The fourth proportional to 99,630.80, 149,446.20 and 92,027.60 is: 138,041.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,630.80 : 149,446.20 = 92,027.60 : x
  2. Step 2: Convert to fraction form
    99,630.80/149,446.20 = 92,027.60/x
  3. Step 3: Cross multiply
    99,630.80x = 149,446.20 × 92,027.60
  4. Step 4: Simplify right side
    99,630.80x = 13,753,175,115.12
  5. Step 5: Solve for x
    x = 13,753,175,115.12/99,630.80
  6. Step 6: Final answer
    x = 138,041.40

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1.5x scale

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.