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Finding the Fourth Proportional to 66,452.43, 99,516.72 and 43,949.40

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Solution

The fourth proportional to 66,452.43, 99,516.72 and 43,949.40 is: 65,817.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,452.43 : 99,516.72 = 43,949.40 : x
  2. Step 2: Convert to fraction form
    66,452.43/99,516.72 = 43,949.40/x
  3. Step 3: Cross multiply
    66,452.43x = 99,516.72 × 43,949.40
  4. Step 4: Simplify right side
    66,452.43x = 4,373,700,133.97
  5. Step 5: Solve for x
    x = 4,373,700,133.97/66,452.43
  6. Step 6: Final answer
    x = 65,817.01

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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.