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Finding the Fourth Proportional to 25,860.16, 38,787.36 and 7,392.16

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Solution

The fourth proportional to 25,860.16, 38,787.36 and 7,392.16 is: 11,087.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,860.16 : 38,787.36 = 7,392.16 : x
  2. Step 2: Convert to fraction form
    25,860.16/38,787.36 = 7,392.16/x
  3. Step 3: Cross multiply
    25,860.16x = 38,787.36 × 7,392.16
  4. Step 4: Simplify right side
    25,860.16x = 286,722,371.10
  5. Step 5: Solve for x
    x = 286,722,371.10/25,860.16
  6. Step 6: Final answer
    x = 11,087.42

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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.