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Finding the Fourth Proportional to 62,991.76, 86,927.88 and 34,311.33

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Solution

The fourth proportional to 62,991.76, 86,927.88 and 34,311.33 is: 47,349.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,991.76 : 86,927.88 = 34,311.33 : x
  2. Step 2: Convert to fraction form
    62,991.76/86,927.88 = 34,311.33/x
  3. Step 3: Cross multiply
    62,991.76x = 86,927.88 × 34,311.33
  4. Step 4: Simplify right side
    62,991.76x = 2,982,611,176.88
  5. Step 5: Solve for x
    x = 2,982,611,176.88/62,991.76
  6. Step 6: Final answer
    x = 47,349.23

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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.