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Finding the Fourth Proportional to 168,965.20, 253,447.80 and 44,318.80

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Solution

The fourth proportional to 168,965.20, 253,447.80 and 44,318.80 is: 66,478.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,965.20 : 253,447.80 = 44,318.80 : x
  2. Step 2: Convert to fraction form
    168,965.20/253,447.80 = 44,318.80/x
  3. Step 3: Cross multiply
    168,965.20x = 253,447.80 × 44,318.80
  4. Step 4: Simplify right side
    168,965.20x = 11,232,502,358.64
  5. Step 5: Solve for x
    x = 11,232,502,358.64/168,965.20
  6. Step 6: Final answer
    x = 66,478.20

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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.