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Finding the Fourth Proportional to 119,620.80, 179,431.20 and 36,514.80

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Solution

The fourth proportional to 119,620.80, 179,431.20 and 36,514.80 is: 54,772.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,620.80 : 179,431.20 = 36,514.80 : x
  2. Step 2: Convert to fraction form
    119,620.80/179,431.20 = 36,514.80/x
  3. Step 3: Cross multiply
    119,620.80x = 179,431.20 × 36,514.80
  4. Step 4: Simplify right side
    119,620.80x = 6,551,894,381.76
  5. Step 5: Solve for x
    x = 6,551,894,381.76/119,620.80
  6. Step 6: Final answer
    x = 54,772.20

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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.