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Finding the Fourth Proportional to 462,793.80, 694,190.70 and 386,686.20

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Solution

The fourth proportional to 462,793.80, 694,190.70 and 386,686.20 is: 580,029.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,793.80 : 694,190.70 = 386,686.20 : x
  2. Step 2: Convert to fraction form
    462,793.80/694,190.70 = 386,686.20/x
  3. Step 3: Cross multiply
    462,793.80x = 694,190.70 × 386,686.20
  4. Step 4: Simplify right side
    462,793.80x = 268,433,963,858.34
  5. Step 5: Solve for x
    x = 268,433,963,858.34/462,793.80
  6. Step 6: Final answer
    x = 580,029.30

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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.