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Finding the Fourth Proportional to 19,367.20, 26,725.20 and 10,982.08

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Solution

The fourth proportional to 19,367.20, 26,725.20 and 10,982.08 is: 15,154.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,367.20 : 26,725.20 = 10,982.08 : x
  2. Step 2: Convert to fraction form
    19,367.20/26,725.20 = 10,982.08/x
  3. Step 3: Cross multiply
    19,367.20x = 26,725.20 × 10,982.08
  4. Step 4: Simplify right side
    19,367.20x = 293,498,284.42
  5. Step 5: Solve for x
    x = 293,498,284.42/19,367.20
  6. Step 6: Final answer
    x = 15,154.40

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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.