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Finding the Fourth Proportional to 119,988.80, 179,983.20 and 96,660.80

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Solution

The fourth proportional to 119,988.80, 179,983.20 and 96,660.80 is: 144,991.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,988.80 : 179,983.20 = 96,660.80 : x
  2. Step 2: Convert to fraction form
    119,988.80/179,983.20 = 96,660.80/x
  3. Step 3: Cross multiply
    119,988.80x = 179,983.20 × 96,660.80
  4. Step 4: Simplify right side
    119,988.80x = 17,397,320,098.56
  5. Step 5: Solve for x
    x = 17,397,320,098.56/119,988.80
  6. Step 6: Final answer
    x = 144,991.20

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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.