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Finding the Fourth Proportional to 66,294.02, 91,489.84 and 38,003.96

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Solution

The fourth proportional to 66,294.02, 91,489.84 and 38,003.96 is: 52,447.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,294.02 : 91,489.84 = 38,003.96 : x
  2. Step 2: Convert to fraction form
    66,294.02/91,489.84 = 38,003.96/x
  3. Step 3: Cross multiply
    66,294.02x = 91,489.84 × 38,003.96
  4. Step 4: Simplify right side
    66,294.02x = 3,476,976,219.77
  5. Step 5: Solve for x
    x = 3,476,976,219.77/66,294.02
  6. Step 6: Final answer
    x = 52,447.81

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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.