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Finding the Fourth Proportional to 111,358.12, 167,046.90 and 28,252.12

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Solution

The fourth proportional to 111,358.12, 167,046.90 and 28,252.12 is: 42,380.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,358.12 : 167,046.90 = 28,252.12 : x
  2. Step 2: Convert to fraction form
    111,358.12/167,046.90 = 28,252.12/x
  3. Step 3: Cross multiply
    111,358.12x = 167,046.90 × 28,252.12
  4. Step 4: Simplify right side
    111,358.12x = 4,719,429,064.43
  5. Step 5: Solve for x
    x = 4,719,429,064.43/111,358.12
  6. Step 6: Final answer
    x = 42,380.65

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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.