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Finding the Fourth Proportional to 603,600.30, 905,400.45 and 391,023.90

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Solution

The fourth proportional to 603,600.30, 905,400.45 and 391,023.90 is: 586,535.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,600.30 : 905,400.45 = 391,023.90 : x
  2. Step 2: Convert to fraction form
    603,600.30/905,400.45 = 391,023.90/x
  3. Step 3: Cross multiply
    603,600.30x = 905,400.45 × 391,023.90
  4. Step 4: Simplify right side
    603,600.30x = 354,033,215,020.76
  5. Step 5: Solve for x
    x = 354,033,215,020.76/603,600.30
  6. Step 6: Final answer
    x = 586,535.85

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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.