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Finding the Fourth Proportional to 111,475.20, 167,212.80 and 52,426.20

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Solution

The fourth proportional to 111,475.20, 167,212.80 and 52,426.20 is: 78,639.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,475.20 : 167,212.80 = 52,426.20 : x
  2. Step 2: Convert to fraction form
    111,475.20/167,212.80 = 52,426.20/x
  3. Step 3: Cross multiply
    111,475.20x = 167,212.80 × 52,426.20
  4. Step 4: Simplify right side
    111,475.20x = 8,766,331,695.36
  5. Step 5: Solve for x
    x = 8,766,331,695.36/111,475.20
  6. Step 6: Final answer
    x = 78,639.30

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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.