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Finding the Fourth Proportional to 225,685.43, 338,420.55 and 83,524.31

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Solution

The fourth proportional to 225,685.43, 338,420.55 and 83,524.31 is: 125,246.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,685.43 : 338,420.55 = 83,524.31 : x
  2. Step 2: Convert to fraction form
    225,685.43/338,420.55 = 83,524.31/x
  3. Step 3: Cross multiply
    225,685.43x = 338,420.55 × 83,524.31
  4. Step 4: Simplify right side
    225,685.43x = 28,266,342,928.57
  5. Step 5: Solve for x
    x = 28,266,342,928.57/225,685.43
  6. Step 6: Final answer
    x = 125,246.64

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1.5x scale

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.