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Finding the Fourth Proportional to 66,098.73, 91,215.96 and 35,883.81

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Solution

The fourth proportional to 66,098.73, 91,215.96 and 35,883.81 is: 49,519.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,098.73 : 91,215.96 = 35,883.81 : x
  2. Step 2: Convert to fraction form
    66,098.73/91,215.96 = 35,883.81/x
  3. Step 3: Cross multiply
    66,098.73x = 91,215.96 × 35,883.81
  4. Step 4: Simplify right side
    66,098.73x = 3,273,176,177.61
  5. Step 5: Solve for x
    x = 3,273,176,177.61/66,098.73
  6. Step 6: Final answer
    x = 49,519.50

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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.