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Finding the Fourth Proportional to 18,924.30, 26,120.25 and 10,965.42

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Solution

The fourth proportional to 18,924.30, 26,120.25 and 10,965.42 is: 15,135.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,924.30 : 26,120.25 = 10,965.42 : x
  2. Step 2: Convert to fraction form
    18,924.30/26,120.25 = 10,965.42/x
  3. Step 3: Cross multiply
    18,924.30x = 26,120.25 × 10,965.42
  4. Step 4: Simplify right side
    18,924.30x = 286,419,511.76
  5. Step 5: Solve for x
    x = 286,419,511.76/18,924.30
  6. Step 6: Final answer
    x = 15,135.01

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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.