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Finding the Fourth Proportional to 18,575.52, 27,872.39 and 8,715.59

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Solution

The fourth proportional to 18,575.52, 27,872.39 and 8,715.59 is: 13,077.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,575.52 : 27,872.39 = 8,715.59 : x
  2. Step 2: Convert to fraction form
    18,575.52/27,872.39 = 8,715.59/x
  3. Step 3: Cross multiply
    18,575.52x = 27,872.39 × 8,715.59
  4. Step 4: Simplify right side
    18,575.52x = 242,924,323.56
  5. Step 5: Solve for x
    x = 242,924,323.56/18,575.52
  6. Step 6: Final answer
    x = 13,077.66

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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.