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Finding the Fourth Proportional to 66,515.96, 99,773.64 and 22,142.64

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Solution

The fourth proportional to 66,515.96, 99,773.64 and 22,142.64 is: 33,213.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,515.96 : 99,773.64 = 22,142.64 : x
  2. Step 2: Convert to fraction form
    66,515.96/99,773.64 = 22,142.64/x
  3. Step 3: Cross multiply
    66,515.96x = 99,773.64 × 22,142.64
  4. Step 4: Simplify right side
    66,515.96x = 2,209,251,792.01
  5. Step 5: Solve for x
    x = 2,209,251,792.01/66,515.96
  6. Step 6: Final answer
    x = 33,213.86

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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.