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Finding the Fourth Proportional to 121,228.60, 181,842.96 and 32,479.84

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Solution

The fourth proportional to 121,228.60, 181,842.96 and 32,479.84 is: 48,719.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,228.60 : 181,842.96 = 32,479.84 : x
  2. Step 2: Convert to fraction form
    121,228.60/181,842.96 = 32,479.84/x
  3. Step 3: Cross multiply
    121,228.60x = 181,842.96 × 32,479.84
  4. Step 4: Simplify right side
    121,228.60x = 5,906,230,245.93
  5. Step 5: Solve for x
    x = 5,906,230,245.93/121,228.60
  6. Step 6: Final answer
    x = 48,719.78

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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.