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Finding the Fourth Proportional to 66,453.67, 91,708.28 and 36,240.64

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Solution

The fourth proportional to 66,453.67, 91,708.28 and 36,240.64 is: 50,013.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,453.67 : 91,708.28 = 36,240.64 : x
  2. Step 2: Convert to fraction form
    66,453.67/91,708.28 = 36,240.64/x
  3. Step 3: Cross multiply
    66,453.67x = 91,708.28 × 36,240.64
  4. Step 4: Simplify right side
    66,453.67x = 3,323,566,350.03
  5. Step 5: Solve for x
    x = 3,323,566,350.03/66,453.67
  6. Step 6: Final answer
    x = 50,013.29

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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.