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Finding the Fourth Proportional to 18,744.92, 25,867.55 and 10,247.11

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Solution

The fourth proportional to 18,744.92, 25,867.55 and 10,247.11 is: 14,140.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,744.92 : 25,867.55 = 10,247.11 : x
  2. Step 2: Convert to fraction form
    18,744.92/25,867.55 = 10,247.11/x
  3. Step 3: Cross multiply
    18,744.92x = 25,867.55 × 10,247.11
  4. Step 4: Simplify right side
    18,744.92x = 265,067,591.23
  5. Step 5: Solve for x
    x = 265,067,591.23/18,744.92
  6. Step 6: Final answer
    x = 14,140.77

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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.