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Finding the Fourth Proportional to 119,808.20, 179,712.30 and 106,329.80

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Solution

The fourth proportional to 119,808.20, 179,712.30 and 106,329.80 is: 159,494.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,808.20 : 179,712.30 = 106,329.80 : x
  2. Step 2: Convert to fraction form
    119,808.20/179,712.30 = 106,329.80/x
  3. Step 3: Cross multiply
    119,808.20x = 179,712.30 × 106,329.80
  4. Step 4: Simplify right side
    119,808.20x = 19,108,772,916.54
  5. Step 5: Solve for x
    x = 19,108,772,916.54/119,808.20
  6. Step 6: Final answer
    x = 159,494.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.