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Finding the Fourth Proportional to 66,459.38, 91,711.41 and 36,651.38

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Solution

The fourth proportional to 66,459.38, 91,711.41 and 36,651.38 is: 50,577.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,459.38 : 91,711.41 = 36,651.38 : x
  2. Step 2: Convert to fraction form
    66,459.38/91,711.41 = 36,651.38/x
  3. Step 3: Cross multiply
    66,459.38x = 91,711.41 × 36,651.38
  4. Step 4: Simplify right side
    66,459.38x = 3,361,349,738.25
  5. Step 5: Solve for x
    x = 3,361,349,738.25/66,459.38
  6. Step 6: Final answer
    x = 50,577.51

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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.