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Finding the Fourth Proportional to 18,767.84, 25,855.67 and 13,092.30

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Solution

The fourth proportional to 18,767.84, 25,855.67 and 13,092.30 is: 18,036.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,767.84 : 25,855.67 = 13,092.30 : x
  2. Step 2: Convert to fraction form
    18,767.84/25,855.67 = 13,092.30/x
  3. Step 3: Cross multiply
    18,767.84x = 25,855.67 × 13,092.30
  4. Step 4: Simplify right side
    18,767.84x = 338,510,221.07
  5. Step 5: Solve for x
    x = 338,510,221.07/18,767.84
  6. Step 6: Final answer
    x = 18,036.72

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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.