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Finding the Third Proportional to 5,032.13 and 7,821.56

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Solution

The third proportional to 5,032.13 and 7,821.56 is: 12,157.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,032.13 : 7,821.56 = 7,821.56 : x
  2. Step 2: Convert to fraction form
    5,032.13/7,821.56 = 7,821.56/x
  3. Step 3: Cross multiply
    5,032.13x = 7,821.56 × 7,821.56
  4. Step 4: Simplify right side
    5,032.13x = 61,176,839.94
  5. Step 5: Solve for x
    x = 61,176,839.94/5,032.13
  6. Step 6: Final answer
    x = 12,157.26

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.