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Finding the Fourth Proportional to 111,356.25, 167,044.11 and 28,250.25

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Solution

The fourth proportional to 111,356.25, 167,044.11 and 28,250.25 is: 42,377.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,356.25 : 167,044.11 = 28,250.25 : x
  2. Step 2: Convert to fraction form
    111,356.25/167,044.11 = 28,250.25/x
  3. Step 3: Cross multiply
    111,356.25x = 167,044.11 × 28,250.25
  4. Step 4: Simplify right side
    111,356.25x = 4,719,037,868.53
  5. Step 5: Solve for x
    x = 4,719,037,868.53/111,356.25
  6. Step 6: Final answer
    x = 42,377.84

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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.