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Finding the Fourth Proportional to 665,772.64, 998,806.80 and 192,422.20

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Solution

The fourth proportional to 665,772.64, 998,806.80 and 192,422.20 is: 288,676.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,772.64 : 998,806.80 = 192,422.20 : x
  2. Step 2: Convert to fraction form
    665,772.64/998,806.80 = 192,422.20/x
  3. Step 3: Cross multiply
    665,772.64x = 998,806.80 × 192,422.20
  4. Step 4: Simplify right side
    665,772.64x = 192,192,601,830.96
  5. Step 5: Solve for x
    x = 192,192,601,830.96/665,772.64
  6. Step 6: Final answer
    x = 288,676.03

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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.