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Finding the Fourth Proportional to 38,551.65, 57,815.12 and 12,250.24

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Solution

The fourth proportional to 38,551.65, 57,815.12 and 12,250.24 is: 18,371.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,551.65 : 57,815.12 = 12,250.24 : x
  2. Step 2: Convert to fraction form
    38,551.65/57,815.12 = 12,250.24/x
  3. Step 3: Cross multiply
    38,551.65x = 57,815.12 × 12,250.24
  4. Step 4: Simplify right side
    38,551.65x = 708,248,912.81
  5. Step 5: Solve for x
    x = 708,248,912.81/38,551.65
  6. Step 6: Final answer
    x = 18,371.43

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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.