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Finding the Fourth Proportional to 457,521.57, 686,286.99 and 120,610.56

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Solution

The fourth proportional to 457,521.57, 686,286.99 and 120,610.56 is: 180,917.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,521.57 : 686,286.99 = 120,610.56 : x
  2. Step 2: Convert to fraction form
    457,521.57/686,286.99 = 120,610.56/x
  3. Step 3: Cross multiply
    457,521.57x = 686,286.99 × 120,610.56
  4. Step 4: Simplify right side
    457,521.57x = 82,773,458,184.61
  5. Step 5: Solve for x
    x = 82,773,458,184.61/457,521.57
  6. Step 6: Final answer
    x = 180,917.06

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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.