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Finding the Fourth Proportional to 209,264.60, 313,917.56 and 67,074.17

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Solution

The fourth proportional to 209,264.60, 313,917.56 and 67,074.17 is: 100,617.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,264.60 : 313,917.56 = 67,074.17 : x
  2. Step 2: Convert to fraction form
    209,264.60/313,917.56 = 67,074.17/x
  3. Step 3: Cross multiply
    209,264.60x = 313,917.56 × 67,074.17
  4. Step 4: Simplify right side
    209,264.60x = 21,055,757,880.47
  5. Step 5: Solve for x
    x = 21,055,757,880.47/209,264.60
  6. Step 6: Final answer
    x = 100,617.87

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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.