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Finding the Fourth Proportional to 331,618.72, 497,499.16 and 106,992

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Solution

The fourth proportional to 331,618.72, 497,499.16 and 106,992 is: 160,510.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,618.72 : 497,499.16 = 106,992 : x
  2. Step 2: Convert to fraction form
    331,618.72/497,499.16 = 106,992/x
  3. Step 3: Cross multiply
    331,618.72x = 497,499.16 × 106,992
  4. Step 4: Simplify right side
    331,618.72x = 53,228,430,126.72
  5. Step 5: Solve for x
    x = 53,228,430,126.72/331,618.72
  6. Step 6: Final answer
    x = 160,510.93

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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.