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Finding the Fourth Proportional to 62,972.46, 86,900.31 and 34,678.38

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Solution

The fourth proportional to 62,972.46, 86,900.31 and 34,678.38 is: 47,855.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,972.46 : 86,900.31 = 34,678.38 : x
  2. Step 2: Convert to fraction form
    62,972.46/86,900.31 = 34,678.38/x
  3. Step 3: Cross multiply
    62,972.46x = 86,900.31 × 34,678.38
  4. Step 4: Simplify right side
    62,972.46x = 3,013,561,972.30
  5. Step 5: Solve for x
    x = 3,013,561,972.30/62,972.46
  6. Step 6: Final answer
    x = 47,855.24

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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.