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Finding the Fourth Proportional to 17,932.80, 26,899.20 and 15,340.80

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Solution

The fourth proportional to 17,932.80, 26,899.20 and 15,340.80 is: 23,011.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,932.80 : 26,899.20 = 15,340.80 : x
  2. Step 2: Convert to fraction form
    17,932.80/26,899.20 = 15,340.80/x
  3. Step 3: Cross multiply
    17,932.80x = 26,899.20 × 15,340.80
  4. Step 4: Simplify right side
    17,932.80x = 412,655,247.36
  5. Step 5: Solve for x
    x = 412,655,247.36/17,932.80
  6. Step 6: Final answer
    x = 23,011.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.