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Finding the Fourth Proportional to 18,177.65, 25,083.92 and 10,221.11

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Solution

The fourth proportional to 18,177.65, 25,083.92 and 10,221.11 is: 14,104.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,177.65 : 25,083.92 = 10,221.11 : x
  2. Step 2: Convert to fraction form
    18,177.65/25,083.92 = 10,221.11/x
  3. Step 3: Cross multiply
    18,177.65x = 25,083.92 × 10,221.11
  4. Step 4: Simplify right side
    18,177.65x = 256,385,454.45
  5. Step 5: Solve for x
    x = 256,385,454.45/18,177.65
  6. Step 6: Final answer
    x = 14,104.43

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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.