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Finding the Fourth Proportional to 216,361, 324,593.34 and 68,617

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Solution

The fourth proportional to 216,361, 324,593.34 and 68,617 is: 102,941.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,361 : 324,593.34 = 68,617 : x
  2. Step 2: Convert to fraction form
    216,361/324,593.34 = 68,617/x
  3. Step 3: Cross multiply
    216,361x = 324,593.34 × 68,617
  4. Step 4: Simplify right side
    216,361x = 22,272,621,210.78
  5. Step 5: Solve for x
    x = 22,272,621,210.78/216,361
  6. Step 6: Final answer
    x = 102,941.94

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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.