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Finding the Fourth Proportional to 66,443.42, 99,503.24 and 43,940.41

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Solution

The fourth proportional to 66,443.42, 99,503.24 and 43,940.41 is: 65,803.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,443.42 : 99,503.24 = 43,940.41 : x
  2. Step 2: Convert to fraction form
    66,443.42/99,503.24 = 43,940.41/x
  3. Step 3: Cross multiply
    66,443.42x = 99,503.24 × 43,940.41
  4. Step 4: Simplify right side
    66,443.42x = 4,372,212,693.47
  5. Step 5: Solve for x
    x = 4,372,212,693.47/66,443.42
  6. Step 6: Final answer
    x = 65,803.54

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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.