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Finding the Fourth Proportional to 618,422.40, 927,633.60 and 197,740.80

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Solution

The fourth proportional to 618,422.40, 927,633.60 and 197,740.80 is: 296,611.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,422.40 : 927,633.60 = 197,740.80 : x
  2. Step 2: Convert to fraction form
    618,422.40/927,633.60 = 197,740.80/x
  3. Step 3: Cross multiply
    618,422.40x = 927,633.60 × 197,740.80
  4. Step 4: Simplify right side
    618,422.40x = 183,431,010,170.88
  5. Step 5: Solve for x
    x = 183,431,010,170.88/618,422.40
  6. Step 6: Final answer
    x = 296,611.20

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Similar ratio
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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.