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Finding the Fourth Proportional to 38,751.75, 58,128.17 and 11,049.75

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Solution

The fourth proportional to 38,751.75, 58,128.17 and 11,049.75 is: 16,574.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,751.75 : 58,128.17 = 11,049.75 : x
  2. Step 2: Convert to fraction form
    38,751.75/58,128.17 = 11,049.75/x
  3. Step 3: Cross multiply
    38,751.75x = 58,128.17 × 11,049.75
  4. Step 4: Simplify right side
    38,751.75x = 642,301,691.21
  5. Step 5: Solve for x
    x = 642,301,691.21/38,751.75
  6. Step 6: Final answer
    x = 16,574.78

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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.