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Finding the Fourth Proportional to 192,815.80, 289,223.70 and 191,503.60

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Solution

The fourth proportional to 192,815.80, 289,223.70 and 191,503.60 is: 287,255.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,815.80 : 289,223.70 = 191,503.60 : x
  2. Step 2: Convert to fraction form
    192,815.80/289,223.70 = 191,503.60/x
  3. Step 3: Cross multiply
    192,815.80x = 289,223.70 × 191,503.60
  4. Step 4: Simplify right side
    192,815.80x = 55,387,379,755.32
  5. Step 5: Solve for x
    x = 55,387,379,755.32/192,815.80
  6. Step 6: Final answer
    x = 287,255.40

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1.5x scale

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.