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Finding the Fourth Proportional to 18,191.65, 25,104.43 and 10,233.87

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Solution

The fourth proportional to 18,191.65, 25,104.43 and 10,233.87 is: 14,122.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,191.65 : 25,104.43 = 10,233.87 : x
  2. Step 2: Convert to fraction form
    18,191.65/25,104.43 = 10,233.87/x
  3. Step 3: Cross multiply
    18,191.65x = 25,104.43 × 10,233.87
  4. Step 4: Simplify right side
    18,191.65x = 256,915,473.04
  5. Step 5: Solve for x
    x = 256,915,473.04/18,191.65
  6. Step 6: Final answer
    x = 14,122.72

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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.