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Finding the Fourth Proportional to 656,170.80, 984,256.20 and 389,794.20

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Solution

The fourth proportional to 656,170.80, 984,256.20 and 389,794.20 is: 584,691.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,170.80 : 984,256.20 = 389,794.20 : x
  2. Step 2: Convert to fraction form
    656,170.80/984,256.20 = 389,794.20/x
  3. Step 3: Cross multiply
    656,170.80x = 984,256.20 × 389,794.20
  4. Step 4: Simplify right side
    656,170.80x = 383,657,358,074.04
  5. Step 5: Solve for x
    x = 383,657,358,074.04/656,170.80
  6. Step 6: Final answer
    x = 584,691.30

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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.