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Finding the Fourth Proportional to 665,753.12, 998,777.31 and 192,402.49

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Solution

The fourth proportional to 665,753.12, 998,777.31 and 192,402.49 is: 288,646.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,753.12 : 998,777.31 = 192,402.49 : x
  2. Step 2: Convert to fraction form
    665,753.12/998,777.31 = 192,402.49/x
  3. Step 3: Cross multiply
    665,753.12x = 998,777.31 × 192,402.49
  4. Step 4: Simplify right side
    665,753.12x = 192,167,240,594.89
  5. Step 5: Solve for x
    x = 192,167,240,594.89/665,753.12
  6. Step 6: Final answer
    x = 288,646.40

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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.