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Finding the Fourth Proportional to 18,874.80, 28,098.72 and 18,776.88

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Solution

The fourth proportional to 18,874.80, 28,098.72 and 18,776.88 is: 27,952.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,874.80 : 28,098.72 = 18,776.88 : x
  2. Step 2: Convert to fraction form
    18,874.80/28,098.72 = 18,776.88/x
  3. Step 3: Cross multiply
    18,874.80x = 28,098.72 × 18,776.88
  4. Step 4: Simplify right side
    18,874.80x = 527,606,293.59
  5. Step 5: Solve for x
    x = 527,606,293.59/18,874.80
  6. Step 6: Final answer
    x = 27,952.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.