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Finding the Fourth Proportional to 109,632.80, 164,449.20 and 95,808.80

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Solution

The fourth proportional to 109,632.80, 164,449.20 and 95,808.80 is: 143,713.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,632.80 : 164,449.20 = 95,808.80 : x
  2. Step 2: Convert to fraction form
    109,632.80/164,449.20 = 95,808.80/x
  3. Step 3: Cross multiply
    109,632.80x = 164,449.20 × 95,808.80
  4. Step 4: Simplify right side
    109,632.80x = 15,755,680,512.96
  5. Step 5: Solve for x
    x = 15,755,680,512.96/109,632.80
  6. Step 6: Final answer
    x = 143,713.20

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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.