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Finding the Fourth Proportional to 66,576.80, 99,865.20 and 41,693.60

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Solution

The fourth proportional to 66,576.80, 99,865.20 and 41,693.60 is: 62,540.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,576.80 : 99,865.20 = 41,693.60 : x
  2. Step 2: Convert to fraction form
    66,576.80/99,865.20 = 41,693.60/x
  3. Step 3: Cross multiply
    66,576.80x = 99,865.20 × 41,693.60
  4. Step 4: Simplify right side
    66,576.80x = 4,163,739,702.72
  5. Step 5: Solve for x
    x = 4,163,739,702.72/66,576.80
  6. Step 6: Final answer
    x = 62,540.40

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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.