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Finding the Fourth Proportional to 25,787.31, 38,681.01 and 7,067.52

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Solution

The fourth proportional to 25,787.31, 38,681.01 and 7,067.52 is: 10,601.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,787.31 : 38,681.01 = 7,067.52 : x
  2. Step 2: Convert to fraction form
    25,787.31/38,681.01 = 7,067.52/x
  3. Step 3: Cross multiply
    25,787.31x = 38,681.01 × 7,067.52
  4. Step 4: Simplify right side
    25,787.31x = 273,378,811.80
  5. Step 5: Solve for x
    x = 273,378,811.80/25,787.31
  6. Step 6: Final answer
    x = 10,601.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.