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Finding the Fourth Proportional to 17,856.98, 26,787.47 and 7,326.57

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Solution

The fourth proportional to 17,856.98, 26,787.47 and 7,326.57 is: 10,990.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,856.98 : 26,787.47 = 7,326.57 : x
  2. Step 2: Convert to fraction form
    17,856.98/26,787.47 = 7,326.57/x
  3. Step 3: Cross multiply
    17,856.98x = 26,787.47 × 7,326.57
  4. Step 4: Simplify right side
    17,856.98x = 196,260,237.45
  5. Step 5: Solve for x
    x = 196,260,237.45/17,856.98
  6. Step 6: Final answer
    x = 10,990.68

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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.