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Finding the Fourth Proportional to 65,921.80, 98,839.02 and 36,353.80

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Solution

The fourth proportional to 65,921.80, 98,839.02 and 36,353.80 is: 54,506.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,921.80 : 98,839.02 = 36,353.80 : x
  2. Step 2: Convert to fraction form
    65,921.80/98,839.02 = 36,353.80/x
  3. Step 3: Cross multiply
    65,921.80x = 98,839.02 × 36,353.80
  4. Step 4: Simplify right side
    65,921.80x = 3,593,173,965.28
  5. Step 5: Solve for x
    x = 3,593,173,965.28/65,921.80
  6. Step 6: Final answer
    x = 54,506.61

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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.