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Finding the Fourth Proportional to 64,591.53, 89,138.44 and 39,102.48

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Solution

The fourth proportional to 64,591.53, 89,138.44 and 39,102.48 is: 53,962.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,591.53 : 89,138.44 = 39,102.48 : x
  2. Step 2: Convert to fraction form
    64,591.53/89,138.44 = 39,102.48/x
  3. Step 3: Cross multiply
    64,591.53x = 89,138.44 × 39,102.48
  4. Step 4: Simplify right side
    64,591.53x = 3,485,534,116.21
  5. Step 5: Solve for x
    x = 3,485,534,116.21/64,591.53
  6. Step 6: Final answer
    x = 53,962.71

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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.