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Finding the Fourth Proportional to 66,423.78, 99,502.02 and 33,042.60

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Solution

The fourth proportional to 66,423.78, 99,502.02 and 33,042.60 is: 49,497.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,423.78 : 99,502.02 = 33,042.60 : x
  2. Step 2: Convert to fraction form
    66,423.78/99,502.02 = 33,042.60/x
  3. Step 3: Cross multiply
    66,423.78x = 99,502.02 × 33,042.60
  4. Step 4: Simplify right side
    66,423.78x = 3,287,805,446.05
  5. Step 5: Solve for x
    x = 3,287,805,446.05/66,423.78
  6. Step 6: Final answer
    x = 49,497.42

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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.