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Finding the Fourth Proportional to 408,974.10, 613,461.15 and 283,002.90

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Solution

The fourth proportional to 408,974.10, 613,461.15 and 283,002.90 is: 424,504.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,974.10 : 613,461.15 = 283,002.90 : x
  2. Step 2: Convert to fraction form
    408,974.10/613,461.15 = 283,002.90/x
  3. Step 3: Cross multiply
    408,974.10x = 613,461.15 × 283,002.90
  4. Step 4: Simplify right side
    408,974.10x = 173,611,284,487.34
  5. Step 5: Solve for x
    x = 173,611,284,487.34/408,974.10
  6. Step 6: Final answer
    x = 424,504.35

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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.