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Finding the Fourth Proportional to 66,702.37, 99,942.48 and 46,939.42

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Solution

The fourth proportional to 66,702.37, 99,942.48 and 46,939.42 is: 70,330.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,702.37 : 99,942.48 = 46,939.42 : x
  2. Step 2: Convert to fraction form
    66,702.37/99,942.48 = 46,939.42/x
  3. Step 3: Cross multiply
    66,702.37x = 99,942.48 × 46,939.42
  4. Step 4: Simplify right side
    66,702.37x = 4,691,242,044.56
  5. Step 5: Solve for x
    x = 4,691,242,044.56/66,702.37
  6. Step 6: Final answer
    x = 70,330.96

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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.