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Finding the Fourth Proportional to 472,282.20, 708,423.30 and 425,626.20

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Solution

The fourth proportional to 472,282.20, 708,423.30 and 425,626.20 is: 638,439.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,282.20 : 708,423.30 = 425,626.20 : x
  2. Step 2: Convert to fraction form
    472,282.20/708,423.30 = 425,626.20/x
  3. Step 3: Cross multiply
    472,282.20x = 708,423.30 × 425,626.20
  4. Step 4: Simplify right side
    472,282.20x = 301,523,517,170.46
  5. Step 5: Solve for x
    x = 301,523,517,170.46/472,282.20
  6. Step 6: Final answer
    x = 638,439.30

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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.