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Finding the Fourth Proportional to 545,793.60, 818,690.40 and 411,949.20

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Solution

The fourth proportional to 545,793.60, 818,690.40 and 411,949.20 is: 617,923.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,793.60 : 818,690.40 = 411,949.20 : x
  2. Step 2: Convert to fraction form
    545,793.60/818,690.40 = 411,949.20/x
  3. Step 3: Cross multiply
    545,793.60x = 818,690.40 × 411,949.20
  4. Step 4: Simplify right side
    545,793.60x = 337,258,855,327.68
  5. Step 5: Solve for x
    x = 337,258,855,327.68/545,793.60
  6. Step 6: Final answer
    x = 617,923.80

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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.