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Finding the Fourth Proportional to 18,691.53, 27,916.14 and 16,933.02

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Solution

The fourth proportional to 18,691.53, 27,916.14 and 16,933.02 is: 25,289.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,691.53 : 27,916.14 = 16,933.02 : x
  2. Step 2: Convert to fraction form
    18,691.53/27,916.14 = 16,933.02/x
  3. Step 3: Cross multiply
    18,691.53x = 27,916.14 × 16,933.02
  4. Step 4: Simplify right side
    18,691.53x = 472,704,515.76
  5. Step 5: Solve for x
    x = 472,704,515.76/18,691.53
  6. Step 6: Final answer
    x = 25,289.78

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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.