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Finding the Fourth Proportional to 269,391.20, 404,048.40 and 91,906.40

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Solution

The fourth proportional to 269,391.20, 404,048.40 and 91,906.40 is: 137,846.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,391.20 : 404,048.40 = 91,906.40 : x
  2. Step 2: Convert to fraction form
    269,391.20/404,048.40 = 91,906.40/x
  3. Step 3: Cross multiply
    269,391.20x = 404,048.40 × 91,906.40
  4. Step 4: Simplify right side
    269,391.20x = 37,134,633,869.76
  5. Step 5: Solve for x
    x = 37,134,633,869.76/269,391.20
  6. Step 6: Final answer
    x = 137,846.50

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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.