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Finding the Fourth Proportional to 408,073.70, 612,110.55 and 127,676.90

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Solution

The fourth proportional to 408,073.70, 612,110.55 and 127,676.90 is: 191,515.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,073.70 : 612,110.55 = 127,676.90 : x
  2. Step 2: Convert to fraction form
    408,073.70/612,110.55 = 127,676.90/x
  3. Step 3: Cross multiply
    408,073.70x = 612,110.55 × 127,676.90
  4. Step 4: Simplify right side
    408,073.70x = 78,152,377,481.30
  5. Step 5: Solve for x
    x = 78,152,377,481.30/408,073.70
  6. Step 6: Final answer
    x = 191,515.35

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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.