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Finding the Fourth Proportional to 217,803.52, 326,664.78 and 68,047.48

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Solution

The fourth proportional to 217,803.52, 326,664.78 and 68,047.48 is: 102,058.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,803.52 : 326,664.78 = 68,047.48 : x
  2. Step 2: Convert to fraction form
    217,803.52/326,664.78 = 68,047.48/x
  3. Step 3: Cross multiply
    217,803.52x = 326,664.78 × 68,047.48
  4. Step 4: Simplify right side
    217,803.52x = 22,228,715,083.75
  5. Step 5: Solve for x
    x = 22,228,715,083.75/217,803.52
  6. Step 6: Final answer
    x = 102,058.57

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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.