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Finding the Fourth Proportional to 225,763.81, 338,645.70 and 75,991.55

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Solution

The fourth proportional to 225,763.81, 338,645.70 and 75,991.55 is: 113,987.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,763.81 : 338,645.70 = 75,991.55 : x
  2. Step 2: Convert to fraction form
    225,763.81/338,645.70 = 75,991.55/x
  3. Step 3: Cross multiply
    225,763.81x = 338,645.70 × 75,991.55
  4. Step 4: Simplify right side
    225,763.81x = 25,734,209,950.61
  5. Step 5: Solve for x
    x = 25,734,209,950.61/225,763.81
  6. Step 6: Final answer
    x = 113,987.31

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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.