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Finding the Fourth Proportional to 663,164.20, 995,783.10 and 383,228.20

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Solution

The fourth proportional to 663,164.20, 995,783.10 and 383,228.20 is: 575,441.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,164.20 : 995,783.10 = 383,228.20 : x
  2. Step 2: Convert to fraction form
    663,164.20/995,783.10 = 383,228.20/x
  3. Step 3: Cross multiply
    663,164.20x = 995,783.10 × 383,228.20
  4. Step 4: Simplify right side
    663,164.20x = 381,612,165,003.42
  5. Step 5: Solve for x
    x = 381,612,165,003.42/663,164.20
  6. Step 6: Final answer
    x = 575,441.44

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Double scale
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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.