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Finding the Fourth Proportional to 521,736.30, 782,604.45 and 166,761.90

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Solution

The fourth proportional to 521,736.30, 782,604.45 and 166,761.90 is: 250,142.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,736.30 : 782,604.45 = 166,761.90 : x
  2. Step 2: Convert to fraction form
    521,736.30/782,604.45 = 166,761.90/x
  3. Step 3: Cross multiply
    521,736.30x = 782,604.45 × 166,761.90
  4. Step 4: Simplify right side
    521,736.30x = 130,508,605,030.46
  5. Step 5: Solve for x
    x = 130,508,605,030.46/521,736.30
  6. Step 6: Final answer
    x = 250,142.85

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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.