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Finding the Fourth Proportional to 111,921.40, 167,882.10 and 38,049.40

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Solution

The fourth proportional to 111,921.40, 167,882.10 and 38,049.40 is: 57,074.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,921.40 : 167,882.10 = 38,049.40 : x
  2. Step 2: Convert to fraction form
    111,921.40/167,882.10 = 38,049.40/x
  3. Step 3: Cross multiply
    111,921.40x = 167,882.10 × 38,049.40
  4. Step 4: Simplify right side
    111,921.40x = 6,387,813,175.74
  5. Step 5: Solve for x
    x = 6,387,813,175.74/111,921.40
  6. Step 6: Final answer
    x = 57,074.10

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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.