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Finding the Fourth Proportional to 209,468.80, 313,857.60 and 104,060.80

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Solution

The fourth proportional to 209,468.80, 313,857.60 and 104,060.80 is: 155,919.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,468.80 : 313,857.60 = 104,060.80 : x
  2. Step 2: Convert to fraction form
    209,468.80/313,857.60 = 104,060.80/x
  3. Step 3: Cross multiply
    209,468.80x = 313,857.60 × 104,060.80
  4. Step 4: Simplify right side
    209,468.80x = 32,660,272,942.08
  5. Step 5: Solve for x
    x = 32,660,272,942.08/209,468.80
  6. Step 6: Final answer
    x = 155,919.51

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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.