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Finding the Fourth Proportional to 66,620.22, 99,972 and 41,708.90

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Solution

The fourth proportional to 66,620.22, 99,972 and 41,708.90 is: 62,589.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,620.22 : 99,972 = 41,708.90 : x
  2. Step 2: Convert to fraction form
    66,620.22/99,972 = 41,708.90/x
  3. Step 3: Cross multiply
    66,620.22x = 99,972 × 41,708.90
  4. Step 4: Simplify right side
    66,620.22x = 4,169,722,150.80
  5. Step 5: Solve for x
    x = 4,169,722,150.80/66,620.22
  6. Step 6: Final answer
    x = 62,589.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.