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Finding the Third Proportional to 31,472.25 and 66,590.25

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Solution

The third proportional to 31,472.25 and 66,590.25 is: 140,894.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,472.25 : 66,590.25 = 66,590.25 : x
  2. Step 2: Convert to fraction form
    31,472.25/66,590.25 = 66,590.25/x
  3. Step 3: Cross multiply
    31,472.25x = 66,590.25 × 66,590.25
  4. Step 4: Simplify right side
    31,472.25x = 4,434,261,395.06
  5. Step 5: Solve for x
    x = 4,434,261,395.06/31,472.25
  6. Step 6: Final answer
    x = 140,894.32

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.