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Finding the Fourth Proportional to 173,314.80, 259,972.20 and 61,121.70

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Solution

The fourth proportional to 173,314.80, 259,972.20 and 61,121.70 is: 91,682.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,314.80 : 259,972.20 = 61,121.70 : x
  2. Step 2: Convert to fraction form
    173,314.80/259,972.20 = 61,121.70/x
  3. Step 3: Cross multiply
    173,314.80x = 259,972.20 × 61,121.70
  4. Step 4: Simplify right side
    173,314.80x = 15,889,942,816.74
  5. Step 5: Solve for x
    x = 15,889,942,816.74/173,314.80
  6. Step 6: Final answer
    x = 91,682.55

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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.