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Finding the Fourth Proportional to 665,765.85, 998,656.07 and 192,455.31

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Solution

The fourth proportional to 665,765.85, 998,656.07 and 192,455.31 is: 288,685.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,765.85 : 998,656.07 = 192,455.31 : x
  2. Step 2: Convert to fraction form
    665,765.85/998,656.07 = 192,455.31/x
  3. Step 3: Cross multiply
    665,765.85x = 998,656.07 × 192,455.31
  4. Step 4: Simplify right side
    665,765.85x = 192,196,663,535.23
  5. Step 5: Solve for x
    x = 192,196,663,535.23/665,765.85
  6. Step 6: Final answer
    x = 288,685.07

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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.