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Finding the Fourth Proportional to 65,872.52, 90,904.04 and 36,064.52

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Solution

The fourth proportional to 65,872.52, 90,904.04 and 36,064.52 is: 49,769.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,872.52 : 90,904.04 = 36,064.52 : x
  2. Step 2: Convert to fraction form
    65,872.52/90,904.04 = 36,064.52/x
  3. Step 3: Cross multiply
    65,872.52x = 90,904.04 × 36,064.52
  4. Step 4: Simplify right side
    65,872.52x = 3,278,410,568.66
  5. Step 5: Solve for x
    x = 3,278,410,568.66/65,872.52
  6. Step 6: Final answer
    x = 49,769.02

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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.