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Finding the Third Proportional to 55,456.88 and 86,031

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Solution

The third proportional to 55,456.88 and 86,031 is: 133,461.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,456.88 : 86,031 = 86,031 : x
  2. Step 2: Convert to fraction form
    55,456.88/86,031 = 86,031/x
  3. Step 3: Cross multiply
    55,456.88x = 86,031 × 86,031
  4. Step 4: Simplify right side
    55,456.88x = 7,401,332,961
  5. Step 5: Solve for x
    x = 7,401,332,961/55,456.88
  6. Step 6: Final answer
    x = 133,461.05

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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.