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Finding the Fourth Proportional to 66,490.84, 91,772.75 and 43,833.83

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Solution

The fourth proportional to 66,490.84, 91,772.75 and 43,833.83 is: 60,500.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,490.84 : 91,772.75 = 43,833.83 : x
  2. Step 2: Convert to fraction form
    66,490.84/91,772.75 = 43,833.83/x
  3. Step 3: Cross multiply
    66,490.84x = 91,772.75 × 43,833.83
  4. Step 4: Simplify right side
    66,490.84x = 4,022,750,902.96
  5. Step 5: Solve for x
    x = 4,022,750,902.96/66,490.84
  6. Step 6: Final answer
    x = 60,500.83

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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.