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Finding the Fourth Proportional to 7,040.88, 9,726.84 and 5,976.86

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Solution

The fourth proportional to 7,040.88, 9,726.84 and 5,976.86 is: 8,256.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,040.88 : 9,726.84 = 5,976.86 : x
  2. Step 2: Convert to fraction form
    7,040.88/9,726.84 = 5,976.86/x
  3. Step 3: Cross multiply
    7,040.88x = 9,726.84 × 5,976.86
  4. Step 4: Simplify right side
    7,040.88x = 58,135,912.29
  5. Step 5: Solve for x
    x = 58,135,912.29/7,040.88
  6. Step 6: Final answer
    x = 8,256.91

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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.