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Finding the Fourth Proportional to 3,967.22, 5,472.54 and 2,707.88

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Solution

The fourth proportional to 3,967.22, 5,472.54 and 2,707.88 is: 3,735.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,967.22 : 5,472.54 = 2,707.88 : x
  2. Step 2: Convert to fraction form
    3,967.22/5,472.54 = 2,707.88/x
  3. Step 3: Cross multiply
    3,967.22x = 5,472.54 × 2,707.88
  4. Step 4: Simplify right side
    3,967.22x = 14,818,954.25
  5. Step 5: Solve for x
    x = 14,818,954.25/3,967.22
  6. Step 6: Final answer
    x = 3,735.35

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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.