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Finding the Fourth Proportional to 64,408.78, 88,839.21 and 62,241.22

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Solution

The fourth proportional to 64,408.78, 88,839.21 and 62,241.22 is: 85,849.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,408.78 : 88,839.21 = 62,241.22 : x
  2. Step 2: Convert to fraction form
    64,408.78/88,839.21 = 62,241.22/x
  3. Step 3: Cross multiply
    64,408.78x = 88,839.21 × 62,241.22
  4. Step 4: Simplify right side
    64,408.78x = 5,529,460,814.24
  5. Step 5: Solve for x
    x = 5,529,460,814.24/64,408.78
  6. Step 6: Final answer
    x = 85,849.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.