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Finding the Fourth Proportional to 536,640.85, 804,961.28 and 256,704.85

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Solution

The fourth proportional to 536,640.85, 804,961.28 and 256,704.85 is: 385,057.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,640.85 : 804,961.28 = 256,704.85 : x
  2. Step 2: Convert to fraction form
    536,640.85/804,961.28 = 256,704.85/x
  3. Step 3: Cross multiply
    536,640.85x = 804,961.28 × 256,704.85
  4. Step 4: Simplify right side
    536,640.85x = 206,637,464,638.21
  5. Step 5: Solve for x
    x = 206,637,464,638.21/536,640.85
  6. Step 6: Final answer
    x = 385,057.28

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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.