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Finding the Fourth Proportional to 389,627.70, 584,441.55 and 275,466.30

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Solution

The fourth proportional to 389,627.70, 584,441.55 and 275,466.30 is: 413,199.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,627.70 : 584,441.55 = 275,466.30 : x
  2. Step 2: Convert to fraction form
    389,627.70/584,441.55 = 275,466.30/x
  3. Step 3: Cross multiply
    389,627.70x = 584,441.55 × 275,466.30
  4. Step 4: Simplify right side
    389,627.70x = 160,993,951,344.77
  5. Step 5: Solve for x
    x = 160,993,951,344.77/389,627.70
  6. Step 6: Final answer
    x = 413,199.45

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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.