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Finding the Fourth Proportional to 536,617.90, 804,926.85 and 287,785.90

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Solution

The fourth proportional to 536,617.90, 804,926.85 and 287,785.90 is: 431,678.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,617.90 : 804,926.85 = 287,785.90 : x
  2. Step 2: Convert to fraction form
    536,617.90/804,926.85 = 287,785.90/x
  3. Step 3: Cross multiply
    536,617.90x = 804,926.85 × 287,785.90
  4. Step 4: Simplify right side
    536,617.90x = 231,646,597,961.42
  5. Step 5: Solve for x
    x = 231,646,597,961.42/536,617.90
  6. Step 6: Final answer
    x = 431,678.85

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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.