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Finding the Fourth Proportional to 121,794.60, 182,582.55 and 79,694.85

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Solution

The fourth proportional to 121,794.60, 182,582.55 and 79,694.85 is: 119,470.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,794.60 : 182,582.55 = 79,694.85 : x
  2. Step 2: Convert to fraction form
    121,794.60/182,582.55 = 79,694.85/x
  3. Step 3: Cross multiply
    121,794.60x = 182,582.55 × 79,694.85
  4. Step 4: Simplify right side
    121,794.60x = 14,550,888,934.87
  5. Step 5: Solve for x
    x = 14,550,888,934.87/121,794.60
  6. Step 6: Final answer
    x = 119,470.72

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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.