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Finding the Fourth Proportional to 62,872.56, 86,764.20 and 34,577.64

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Solution

The fourth proportional to 62,872.56, 86,764.20 and 34,577.64 is: 47,717.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,872.56 : 86,764.20 = 34,577.64 : x
  2. Step 2: Convert to fraction form
    62,872.56/86,764.20 = 34,577.64/x
  3. Step 3: Cross multiply
    62,872.56x = 86,764.20 × 34,577.64
  4. Step 4: Simplify right side
    62,872.56x = 3,000,101,272.49
  5. Step 5: Solve for x
    x = 3,000,101,272.49/62,872.56
  6. Step 6: Final answer
    x = 47,717.18

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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.