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Finding the Fourth Proportional to 79,851.60, 119,734.20 and 33,109.20

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Solution

The fourth proportional to 79,851.60, 119,734.20 and 33,109.20 is: 49,645.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,851.60 : 119,734.20 = 33,109.20 : x
  2. Step 2: Convert to fraction form
    79,851.60/119,734.20 = 33,109.20/x
  3. Step 3: Cross multiply
    79,851.60x = 119,734.20 × 33,109.20
  4. Step 4: Simplify right side
    79,851.60x = 3,964,303,574.64
  5. Step 5: Solve for x
    x = 3,964,303,574.64/79,851.60
  6. Step 6: Final answer
    x = 49,645.89

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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.