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Finding the Fourth Proportional to 66,168.50, 99,210.22 and 43,653.13

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Solution

The fourth proportional to 66,168.50, 99,210.22 and 43,653.13 is: 65,451.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,168.50 : 99,210.22 = 43,653.13 : x
  2. Step 2: Convert to fraction form
    66,168.50/99,210.22 = 43,653.13/x
  3. Step 3: Cross multiply
    66,168.50x = 99,210.22 × 43,653.13
  4. Step 4: Simplify right side
    66,168.50x = 4,330,836,273.83
  5. Step 5: Solve for x
    x = 4,330,836,273.83/66,168.50
  6. Step 6: Final answer
    x = 65,451.64

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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.