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Finding the Fourth Proportional to 5,717.88, 7,890.78 and 3,233.88

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Solution

The fourth proportional to 5,717.88, 7,890.78 and 3,233.88 is: 4,462.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,717.88 : 7,890.78 = 3,233.88 : x
  2. Step 2: Convert to fraction form
    5,717.88/7,890.78 = 3,233.88/x
  3. Step 3: Cross multiply
    5,717.88x = 7,890.78 × 3,233.88
  4. Step 4: Simplify right side
    5,717.88x = 25,517,835.63
  5. Step 5: Solve for x
    x = 25,517,835.63/5,717.88
  6. Step 6: Final answer
    x = 4,462.81

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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.