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Finding the Fourth Proportional to 159,568.72, 220,196.24 and 87,934.48

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Solution

The fourth proportional to 159,568.72, 220,196.24 and 87,934.48 is: 121,344.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,568.72 : 220,196.24 = 87,934.48 : x
  2. Step 2: Convert to fraction form
    159,568.72/220,196.24 = 87,934.48/x
  3. Step 3: Cross multiply
    159,568.72x = 220,196.24 × 87,934.48
  4. Step 4: Simplify right side
    159,568.72x = 19,362,841,862.36
  5. Step 5: Solve for x
    x = 19,362,841,862.36/159,568.72
  6. Step 6: Final answer
    x = 121,344.85

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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.