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Finding the Fourth Proportional to 61,178.76, 91,620.45 and 34,803.54

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Solution

The fourth proportional to 61,178.76, 91,620.45 and 34,803.54 is: 52,121.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,178.76 : 91,620.45 = 34,803.54 : x
  2. Step 2: Convert to fraction form
    61,178.76/91,620.45 = 34,803.54/x
  3. Step 3: Cross multiply
    61,178.76x = 91,620.45 × 34,803.54
  4. Step 4: Simplify right side
    61,178.76x = 3,188,715,996.39
  5. Step 5: Solve for x
    x = 3,188,715,996.39/61,178.76
  6. Step 6: Final answer
    x = 52,121.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.