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Finding the Fourth Proportional to 404,660.80, 606,991.20 and 194,190.40

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Solution

The fourth proportional to 404,660.80, 606,991.20 and 194,190.40 is: 291,285.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,660.80 : 606,991.20 = 194,190.40 : x
  2. Step 2: Convert to fraction form
    404,660.80/606,991.20 = 194,190.40/x
  3. Step 3: Cross multiply
    404,660.80x = 606,991.20 × 194,190.40
  4. Step 4: Simplify right side
    404,660.80x = 117,871,863,924.48
  5. Step 5: Solve for x
    x = 117,871,863,924.48/404,660.80
  6. Step 6: Final answer
    x = 291,285.60

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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.