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Finding the Fourth Proportional to 629,872.40, 944,808.60 and 621,027.20

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Solution

The fourth proportional to 629,872.40, 944,808.60 and 621,027.20 is: 931,540.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,872.40 : 944,808.60 = 621,027.20 : x
  2. Step 2: Convert to fraction form
    629,872.40/944,808.60 = 621,027.20/x
  3. Step 3: Cross multiply
    629,872.40x = 944,808.60 × 621,027.20
  4. Step 4: Simplify right side
    629,872.40x = 586,751,839,393.92
  5. Step 5: Solve for x
    x = 586,751,839,393.92/629,872.40
  6. Step 6: Final answer
    x = 931,540.80

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Double scale
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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.