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Finding the Fourth Proportional to 65,245.72, 90,040.28 and 36,957.28

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Solution

The fourth proportional to 65,245.72, 90,040.28 and 36,957.28 is: 51,001.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,245.72 : 90,040.28 = 36,957.28 : x
  2. Step 2: Convert to fraction form
    65,245.72/90,040.28 = 36,957.28/x
  3. Step 3: Cross multiply
    65,245.72x = 90,040.28 × 36,957.28
  4. Step 4: Simplify right side
    65,245.72x = 3,327,643,839.24
  5. Step 5: Solve for x
    x = 3,327,643,839.24/65,245.72
  6. Step 6: Final answer
    x = 51,001.72

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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.