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Finding the Fourth Proportional to 64,409.28, 88,839.90 and 62,241.72

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Solution

The fourth proportional to 64,409.28, 88,839.90 and 62,241.72 is: 85,850.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,409.28 : 88,839.90 = 62,241.72 : x
  2. Step 2: Convert to fraction form
    64,409.28/88,839.90 = 62,241.72/x
  3. Step 3: Cross multiply
    64,409.28x = 88,839.90 × 62,241.72
  4. Step 4: Simplify right side
    64,409.28x = 5,529,548,180.63
  5. Step 5: Solve for x
    x = 5,529,548,180.63/64,409.28
  6. Step 6: Final answer
    x = 85,850.18

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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.