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Finding the Fourth Proportional to 18,456.66, 25,472.06 and 10,905.43

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Solution

The fourth proportional to 18,456.66, 25,472.06 and 10,905.43 is: 15,050.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,456.66 : 25,472.06 = 10,905.43 : x
  2. Step 2: Convert to fraction form
    18,456.66/25,472.06 = 10,905.43/x
  3. Step 3: Cross multiply
    18,456.66x = 25,472.06 × 10,905.43
  4. Step 4: Simplify right side
    18,456.66x = 277,783,767.29
  5. Step 5: Solve for x
    x = 277,783,767.29/18,456.66
  6. Step 6: Final answer
    x = 15,050.60

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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.