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Finding the Fourth Proportional to 135,052.88, 202,449.48 and 90,692

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Solution

The fourth proportional to 135,052.88, 202,449.48 and 90,692 is: 135,950.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,052.88 : 202,449.48 = 90,692 : x
  2. Step 2: Convert to fraction form
    135,052.88/202,449.48 = 90,692/x
  3. Step 3: Cross multiply
    135,052.88x = 202,449.48 × 90,692
  4. Step 4: Simplify right side
    135,052.88x = 18,360,548,240.16
  5. Step 5: Solve for x
    x = 18,360,548,240.16/135,052.88
  6. Step 6: Final answer
    x = 135,950.81

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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.