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Finding the Fourth Proportional to 453,196.20, 679,794.30 and 217,000.20

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Solution

The fourth proportional to 453,196.20, 679,794.30 and 217,000.20 is: 325,500.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,196.20 : 679,794.30 = 217,000.20 : x
  2. Step 2: Convert to fraction form
    453,196.20/679,794.30 = 217,000.20/x
  3. Step 3: Cross multiply
    453,196.20x = 679,794.30 × 217,000.20
  4. Step 4: Simplify right side
    453,196.20x = 147,515,499,058.86
  5. Step 5: Solve for x
    x = 147,515,499,058.86/453,196.20
  6. Step 6: Final answer
    x = 325,500.30

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Half scale
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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.