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Finding the Fourth Proportional to 369,716.20, 554,355.60 and 192,569.20

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Solution

The fourth proportional to 369,716.20, 554,355.60 and 192,569.20 is: 288,739.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,716.20 : 554,355.60 = 192,569.20 : x
  2. Step 2: Convert to fraction form
    369,716.20/554,355.60 = 192,569.20/x
  3. Step 3: Cross multiply
    369,716.20x = 554,355.60 × 192,569.20
  4. Step 4: Simplify right side
    369,716.20x = 106,751,814,407.52
  5. Step 5: Solve for x
    x = 106,751,814,407.52/369,716.20
  6. Step 6: Final answer
    x = 288,739.89

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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.