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Finding the Fourth Proportional to 91,239.70, 136,844.64 and 32,061.54

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Solution

The fourth proportional to 91,239.70, 136,844.64 and 32,061.54 is: 48,087.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,239.70 : 136,844.64 = 32,061.54 : x
  2. Step 2: Convert to fraction form
    91,239.70/136,844.64 = 32,061.54/x
  3. Step 3: Cross multiply
    91,239.70x = 136,844.64 × 32,061.54
  4. Step 4: Simplify right side
    91,239.70x = 4,387,449,899.15
  5. Step 5: Solve for x
    x = 4,387,449,899.15/91,239.70
  6. Step 6: Final answer
    x = 48,087.07

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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.