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Finding the Fourth Proportional to 18,873.81, 26,046.41 and 10,918.53

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Solution

The fourth proportional to 18,873.81, 26,046.41 and 10,918.53 is: 15,067.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,873.81 : 26,046.41 = 10,918.53 : x
  2. Step 2: Convert to fraction form
    18,873.81/26,046.41 = 10,918.53/x
  3. Step 3: Cross multiply
    18,873.81x = 26,046.41 × 10,918.53
  4. Step 4: Simplify right side
    18,873.81x = 284,388,454.38
  5. Step 5: Solve for x
    x = 284,388,454.38/18,873.81
  6. Step 6: Final answer
    x = 15,067.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.