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Finding the Fourth Proportional to 66,253.69, 91,453.83 and 39,396.11

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Solution

The fourth proportional to 66,253.69, 91,453.83 and 39,396.11 is: 54,380.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,253.69 : 91,453.83 = 39,396.11 : x
  2. Step 2: Convert to fraction form
    66,253.69/91,453.83 = 39,396.11/x
  3. Step 3: Cross multiply
    66,253.69x = 91,453.83 × 39,396.11
  4. Step 4: Simplify right side
    66,253.69x = 3,602,924,949.62
  5. Step 5: Solve for x
    x = 3,602,924,949.62/66,253.69
  6. Step 6: Final answer
    x = 54,380.75

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1.5x scale

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.