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Finding the Fourth Proportional to 159,871.83, 220,623.65 and 88,251.68

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Solution

The fourth proportional to 159,871.83, 220,623.65 and 88,251.68 is: 121,787.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,871.83 : 220,623.65 = 88,251.68 : x
  2. Step 2: Convert to fraction form
    159,871.83/220,623.65 = 88,251.68/x
  3. Step 3: Cross multiply
    159,871.83x = 220,623.65 × 88,251.68
  4. Step 4: Simplify right side
    159,871.83x = 19,470,406,960.47
  5. Step 5: Solve for x
    x = 19,470,406,960.47/159,871.83
  6. Step 6: Final answer
    x = 121,787.61

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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.