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Finding the Fourth Proportional to 190,166.40, 285,249.60 and 188,416.80

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Solution

The fourth proportional to 190,166.40, 285,249.60 and 188,416.80 is: 282,625.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,166.40 : 285,249.60 = 188,416.80 : x
  2. Step 2: Convert to fraction form
    190,166.40/285,249.60 = 188,416.80/x
  3. Step 3: Cross multiply
    190,166.40x = 285,249.60 × 188,416.80
  4. Step 4: Simplify right side
    190,166.40x = 53,745,816,833.28
  5. Step 5: Solve for x
    x = 53,745,816,833.28/190,166.40
  6. Step 6: Final answer
    x = 282,625.20

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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.