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Finding the Fourth Proportional to 62,990.76, 86,926.50 and 34,310.33

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Solution

The fourth proportional to 62,990.76, 86,926.50 and 34,310.33 is: 47,347.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,990.76 : 86,926.50 = 34,310.33 : x
  2. Step 2: Convert to fraction form
    62,990.76/86,926.50 = 34,310.33/x
  3. Step 3: Cross multiply
    62,990.76x = 86,926.50 × 34,310.33
  4. Step 4: Simplify right side
    62,990.76x = 2,982,476,710.59
  5. Step 5: Solve for x
    x = 2,982,476,710.59/62,990.76
  6. Step 6: Final answer
    x = 47,347.85

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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.