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Finding the Fourth Proportional to 18,691.66, 27,916.34 and 16,933.14

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Solution

The fourth proportional to 18,691.66, 27,916.34 and 16,933.14 is: 25,289.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,691.66 : 27,916.34 = 16,933.14 : x
  2. Step 2: Convert to fraction form
    18,691.66/27,916.34 = 16,933.14/x
  3. Step 3: Cross multiply
    18,691.66x = 27,916.34 × 16,933.14
  4. Step 4: Simplify right side
    18,691.66x = 472,711,293.51
  5. Step 5: Solve for x
    x = 472,711,293.51/18,691.66
  6. Step 6: Final answer
    x = 25,289.96

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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.