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Finding the Fourth Proportional to 584,138.20, 876,207.30 and 384,683.80

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Solution

The fourth proportional to 584,138.20, 876,207.30 and 384,683.80 is: 577,025.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,138.20 : 876,207.30 = 384,683.80 : x
  2. Step 2: Convert to fraction form
    584,138.20/876,207.30 = 384,683.80/x
  3. Step 3: Cross multiply
    584,138.20x = 876,207.30 × 384,683.80
  4. Step 4: Simplify right side
    584,138.20x = 337,062,753,751.74
  5. Step 5: Solve for x
    x = 337,062,753,751.74/584,138.20
  6. Step 6: Final answer
    x = 577,025.70

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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.