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Finding the Fourth Proportional to 472,162.20, 708,243.30 and 425,506.20

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Solution

The fourth proportional to 472,162.20, 708,243.30 and 425,506.20 is: 638,259.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,162.20 : 708,243.30 = 425,506.20 : x
  2. Step 2: Convert to fraction form
    472,162.20/708,243.30 = 425,506.20/x
  3. Step 3: Cross multiply
    472,162.20x = 708,243.30 × 425,506.20
  4. Step 4: Simplify right side
    472,162.20x = 301,361,915,258.46
  5. Step 5: Solve for x
    x = 301,361,915,258.46/472,162.20
  6. Step 6: Final answer
    x = 638,259.30

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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.