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Finding the Fourth Proportional to 18,122.16, 25,008.84 and 10,951.08

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Solution

The fourth proportional to 18,122.16, 25,008.84 and 10,951.08 is: 15,112.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,122.16 : 25,008.84 = 10,951.08 : x
  2. Step 2: Convert to fraction form
    18,122.16/25,008.84 = 10,951.08/x
  3. Step 3: Cross multiply
    18,122.16x = 25,008.84 × 10,951.08
  4. Step 4: Simplify right side
    18,122.16x = 273,873,752.79
  5. Step 5: Solve for x
    x = 273,873,752.79/18,122.16
  6. Step 6: Final answer
    x = 15,112.64

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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.