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Finding the Fourth Proportional to 18,456.91, 25,472.41 and 10,905.68

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Solution

The fourth proportional to 18,456.91, 25,472.41 and 10,905.68 is: 15,050.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,456.91 : 25,472.41 = 10,905.68 : x
  2. Step 2: Convert to fraction form
    18,456.91/25,472.41 = 10,905.68/x
  3. Step 3: Cross multiply
    18,456.91x = 25,472.41 × 10,905.68
  4. Step 4: Simplify right side
    18,456.91x = 277,793,988.71
  5. Step 5: Solve for x
    x = 277,793,988.71/18,456.91
  6. Step 6: Final answer
    x = 15,050.95

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1.5x scale

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.