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Finding the Fourth Proportional to 119,793.60, 179,344.80 and 105,969.60

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Solution

The fourth proportional to 119,793.60, 179,344.80 and 105,969.60 is: 158,648.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,793.60 : 179,344.80 = 105,969.60 : x
  2. Step 2: Convert to fraction form
    119,793.60/179,344.80 = 105,969.60/x
  3. Step 3: Cross multiply
    119,793.60x = 179,344.80 × 105,969.60
  4. Step 4: Simplify right side
    119,793.60x = 19,005,096,718.08
  5. Step 5: Solve for x
    x = 19,005,096,718.08/119,793.60
  6. Step 6: Final answer
    x = 158,648.68

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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.