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Finding the Fourth Proportional to 472,616.20, 708,924.30 and 425,960.20

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Solution

The fourth proportional to 472,616.20, 708,924.30 and 425,960.20 is: 638,940.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,616.20 : 708,924.30 = 425,960.20 : x
  2. Step 2: Convert to fraction form
    472,616.20/708,924.30 = 425,960.20/x
  3. Step 3: Cross multiply
    472,616.20x = 708,924.30 × 425,960.20
  4. Step 4: Simplify right side
    472,616.20x = 301,973,536,612.86
  5. Step 5: Solve for x
    x = 301,973,536,612.86/472,616.20
  6. Step 6: Final answer
    x = 638,940.30

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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.