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Finding the Fourth Proportional to 159,876.15, 220,623.26 and 88,255.95

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Solution

The fourth proportional to 159,876.15, 220,623.26 and 88,255.95 is: 121,789.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,876.15 : 220,623.26 = 88,255.95 : x
  2. Step 2: Convert to fraction form
    159,876.15/220,623.26 = 88,255.95/x
  3. Step 3: Cross multiply
    159,876.15x = 220,623.26 × 88,255.95
  4. Step 4: Simplify right side
    159,876.15x = 19,471,314,962.12
  5. Step 5: Solve for x
    x = 19,471,314,962.12/159,876.15
  6. Step 6: Final answer
    x = 121,789.99

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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.