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Finding the Fourth Proportional to 539,796.10, 809,694.15 and 165,819.10

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Solution

The fourth proportional to 539,796.10, 809,694.15 and 165,819.10 is: 248,728.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,796.10 : 809,694.15 = 165,819.10 : x
  2. Step 2: Convert to fraction form
    539,796.10/809,694.15 = 165,819.10/x
  3. Step 3: Cross multiply
    539,796.10x = 809,694.15 × 165,819.10
  4. Step 4: Simplify right side
    539,796.10x = 134,262,755,228.27
  5. Step 5: Solve for x
    x = 134,262,755,228.27/539,796.10
  6. Step 6: Final answer
    x = 248,728.65

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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.