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Finding the Fourth Proportional to 64,859.90, 97,299.86 and 27,420.09

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Solution

The fourth proportional to 64,859.90, 97,299.86 and 27,420.09 is: 41,134.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,859.90 : 97,299.86 = 27,420.09 : x
  2. Step 2: Convert to fraction form
    64,859.90/97,299.86 = 27,420.09/x
  3. Step 3: Cross multiply
    64,859.90x = 97,299.86 × 27,420.09
  4. Step 4: Simplify right side
    64,859.90x = 2,667,970,781.09
  5. Step 5: Solve for x
    x = 2,667,970,781.09/64,859.90
  6. Step 6: Final answer
    x = 41,134.37

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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.