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Finding the Fourth Proportional to 159,890.55, 220,643.16 and 88,269.03

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Solution

The fourth proportional to 159,890.55, 220,643.16 and 88,269.03 is: 121,808.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,890.55 : 220,643.16 = 88,269.03 : x
  2. Step 2: Convert to fraction form
    159,890.55/220,643.16 = 88,269.03/x
  3. Step 3: Cross multiply
    159,890.55x = 220,643.16 × 88,269.03
  4. Step 4: Simplify right side
    159,890.55x = 19,475,957,709.33
  5. Step 5: Solve for x
    x = 19,475,957,709.33/159,890.55
  6. Step 6: Final answer
    x = 121,808.06

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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.