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Finding the Fourth Proportional to 91,102.66, 136,525.51 and 43,019.96

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Solution

The fourth proportional to 91,102.66, 136,525.51 and 43,019.96 is: 64,469.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,102.66 : 136,525.51 = 43,019.96 : x
  2. Step 2: Convert to fraction form
    91,102.66/136,525.51 = 43,019.96/x
  3. Step 3: Cross multiply
    91,102.66x = 136,525.51 × 43,019.96
  4. Step 4: Simplify right side
    91,102.66x = 5,873,321,189.00
  5. Step 5: Solve for x
    x = 5,873,321,189.00/91,102.66
  6. Step 6: Final answer
    x = 64,469.26

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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.