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Finding the Fourth Proportional to 159,969.45, 220,756.49 and 88,347.94

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Solution

The fourth proportional to 159,969.45, 220,756.49 and 88,347.94 is: 121,919.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,969.45 : 220,756.49 = 88,347.94 : x
  2. Step 2: Convert to fraction form
    159,969.45/220,756.49 = 88,347.94/x
  3. Step 3: Cross multiply
    159,969.45x = 220,756.49 × 88,347.94
  4. Step 4: Simplify right side
    159,969.45x = 19,503,380,843.52
  5. Step 5: Solve for x
    x = 19,503,380,843.52/159,969.45
  6. Step 6: Final answer
    x = 121,919.41

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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.