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Finding the Fourth Proportional to 412,926.80, 619,390.20 and 132,472.40

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Solution

The fourth proportional to 412,926.80, 619,390.20 and 132,472.40 is: 198,708.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,926.80 : 619,390.20 = 132,472.40 : x
  2. Step 2: Convert to fraction form
    412,926.80/619,390.20 = 132,472.40/x
  3. Step 3: Cross multiply
    412,926.80x = 619,390.20 × 132,472.40
  4. Step 4: Simplify right side
    412,926.80x = 82,052,106,330.48
  5. Step 5: Solve for x
    x = 82,052,106,330.48/412,926.80
  6. Step 6: Final answer
    x = 198,708.60

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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.