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Finding the Fourth Proportional to 144,444.80, 199,343.92 and 80,788.48

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Solution

The fourth proportional to 144,444.80, 199,343.92 and 80,788.48 is: 111,493.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,444.80 : 199,343.92 = 80,788.48 : x
  2. Step 2: Convert to fraction form
    144,444.80/199,343.92 = 80,788.48/x
  3. Step 3: Cross multiply
    144,444.80x = 199,343.92 × 80,788.48
  4. Step 4: Simplify right side
    144,444.80x = 16,104,692,294.04
  5. Step 5: Solve for x
    x = 16,104,692,294.04/144,444.80
  6. Step 6: Final answer
    x = 111,493.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.