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Finding the Third Proportional to 7,158.66 and 15,376.78

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Solution

The third proportional to 7,158.66 and 15,376.78 is: 33,029.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,158.66 : 15,376.78 = 15,376.78 : x
  2. Step 2: Convert to fraction form
    7,158.66/15,376.78 = 15,376.78/x
  3. Step 3: Cross multiply
    7,158.66x = 15,376.78 × 15,376.78
  4. Step 4: Simplify right side
    7,158.66x = 236,445,401.61
  5. Step 5: Solve for x
    x = 236,445,401.61/7,158.66
  6. Step 6: Final answer
    x = 33,029.30

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.