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Finding the Fourth Proportional to 472,578.60, 708,911.10 and 192,037.80

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Solution

The fourth proportional to 472,578.60, 708,911.10 and 192,037.80 is: 288,074.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,578.60 : 708,911.10 = 192,037.80 : x
  2. Step 2: Convert to fraction form
    472,578.60/708,911.10 = 192,037.80/x
  3. Step 3: Cross multiply
    472,578.60x = 708,911.10 × 192,037.80
  4. Step 4: Simplify right side
    472,578.60x = 136,137,728,039.58
  5. Step 5: Solve for x
    x = 136,137,728,039.58/472,578.60
  6. Step 6: Final answer
    x = 288,074.25

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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.