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Finding the Fourth Proportional to 98,046.72, 135,311.22 and 55,608.03

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Solution

The fourth proportional to 98,046.72, 135,311.22 and 55,608.03 is: 76,742.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,046.72 : 135,311.22 = 55,608.03 : x
  2. Step 2: Convert to fraction form
    98,046.72/135,311.22 = 55,608.03/x
  3. Step 3: Cross multiply
    98,046.72x = 135,311.22 × 55,608.03
  4. Step 4: Simplify right side
    98,046.72x = 7,524,390,381.10
  5. Step 5: Solve for x
    x = 7,524,390,381.10/98,046.72
  6. Step 6: Final answer
    x = 76,742.91

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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.