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Finding the Fourth Proportional to 310,067.20, 465,100.80 and 110,612.80

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Solution

The fourth proportional to 310,067.20, 465,100.80 and 110,612.80 is: 165,919.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,067.20 : 465,100.80 = 110,612.80 : x
  2. Step 2: Convert to fraction form
    310,067.20/465,100.80 = 110,612.80/x
  3. Step 3: Cross multiply
    310,067.20x = 465,100.80 × 110,612.80
  4. Step 4: Simplify right side
    310,067.20x = 51,446,101,770.24
  5. Step 5: Solve for x
    x = 51,446,101,770.24/310,067.20
  6. Step 6: Final answer
    x = 165,919.20

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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.