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Finding the Fourth Proportional to 6,679.88, 9,218.28 and 3,695.96

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Solution

The fourth proportional to 6,679.88, 9,218.28 and 3,695.96 is: 5,100.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,679.88 : 9,218.28 = 3,695.96 : x
  2. Step 2: Convert to fraction form
    6,679.88/9,218.28 = 3,695.96/x
  3. Step 3: Cross multiply
    6,679.88x = 9,218.28 × 3,695.96
  4. Step 4: Simplify right side
    6,679.88x = 34,070,394.15
  5. Step 5: Solve for x
    x = 34,070,394.15/6,679.88
  6. Step 6: Final answer
    x = 5,100.45

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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.