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Finding the Fourth Proportional to 66,609.70, 91,918.74 and 37,933.27

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Solution

The fourth proportional to 66,609.70, 91,918.74 and 37,933.27 is: 52,346.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,609.70 : 91,918.74 = 37,933.27 : x
  2. Step 2: Convert to fraction form
    66,609.70/91,918.74 = 37,933.27/x
  3. Step 3: Cross multiply
    66,609.70x = 91,918.74 × 37,933.27
  4. Step 4: Simplify right side
    66,609.70x = 3,486,778,382.48
  5. Step 5: Solve for x
    x = 3,486,778,382.48/66,609.70
  6. Step 6: Final answer
    x = 52,346.41

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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.