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Finding the Fourth Proportional to 412,910.10, 619,365.15 and 132,455.70

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Solution

The fourth proportional to 412,910.10, 619,365.15 and 132,455.70 is: 198,683.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,910.10 : 619,365.15 = 132,455.70 : x
  2. Step 2: Convert to fraction form
    412,910.10/619,365.15 = 132,455.70/x
  3. Step 3: Cross multiply
    412,910.10x = 619,365.15 × 132,455.70
  4. Step 4: Simplify right side
    412,910.10x = 82,038,444,498.86
  5. Step 5: Solve for x
    x = 82,038,444,498.86/412,910.10
  6. Step 6: Final answer
    x = 198,683.55

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Similar ratio
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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.