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Finding the Fourth Proportional to 18,965.59, 28,304.18 and 16,863.76

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Solution

The fourth proportional to 18,965.59, 28,304.18 and 16,863.76 is: 25,167.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,965.59 : 28,304.18 = 16,863.76 : x
  2. Step 2: Convert to fraction form
    18,965.59/28,304.18 = 16,863.76/x
  3. Step 3: Cross multiply
    18,965.59x = 28,304.18 × 16,863.76
  4. Step 4: Simplify right side
    18,965.59x = 477,314,898.52
  5. Step 5: Solve for x
    x = 477,314,898.52/18,965.59
  6. Step 6: Final answer
    x = 25,167.42

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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.