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Finding the Fourth Proportional to 77,517.76, 106,770.80 and 59,578.48

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Solution

The fourth proportional to 77,517.76, 106,770.80 and 59,578.48 is: 82,061.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,517.76 : 106,770.80 = 59,578.48 : x
  2. Step 2: Convert to fraction form
    77,517.76/106,770.80 = 59,578.48/x
  3. Step 3: Cross multiply
    77,517.76x = 106,770.80 × 59,578.48
  4. Step 4: Simplify right side
    77,517.76x = 6,361,241,972.38
  5. Step 5: Solve for x
    x = 6,361,241,972.38/77,517.76
  6. Step 6: Final answer
    x = 82,061.74

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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.