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Finding the Fourth Proportional to 192,660.64, 288,919.26 and 66,265.40

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Solution

The fourth proportional to 192,660.64, 288,919.26 and 66,265.40 is: 99,373.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,660.64 : 288,919.26 = 66,265.40 : x
  2. Step 2: Convert to fraction form
    192,660.64/288,919.26 = 66,265.40/x
  3. Step 3: Cross multiply
    192,660.64x = 288,919.26 × 66,265.40
  4. Step 4: Simplify right side
    192,660.64x = 19,145,350,331.60
  5. Step 5: Solve for x
    x = 19,145,350,331.60/192,660.64
  6. Step 6: Final answer
    x = 99,373.44

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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.