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Finding the Fourth Proportional to 262,854.30, 394,540.65 and 129,884.70

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Solution

The fourth proportional to 262,854.30, 394,540.65 and 129,884.70 is: 194,955.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,854.30 : 394,540.65 = 129,884.70 : x
  2. Step 2: Convert to fraction form
    262,854.30/394,540.65 = 129,884.70/x
  3. Step 3: Cross multiply
    262,854.30x = 394,540.65 × 129,884.70
  4. Step 4: Simplify right side
    262,854.30x = 51,244,793,963.06
  5. Step 5: Solve for x
    x = 51,244,793,963.06/262,854.30
  6. Step 6: Final answer
    x = 194,955.13

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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.