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Finding the Third Proportional to 3,031.88 and 6,430.75

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Solution

The third proportional to 3,031.88 and 6,430.75 is: 13,639.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,031.88 : 6,430.75 = 6,430.75 : x
  2. Step 2: Convert to fraction form
    3,031.88/6,430.75 = 6,430.75/x
  3. Step 3: Cross multiply
    3,031.88x = 6,430.75 × 6,430.75
  4. Step 4: Simplify right side
    3,031.88x = 41,354,545.56
  5. Step 5: Solve for x
    x = 41,354,545.56/3,031.88
  6. Step 6: Final answer
    x = 13,639.92

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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.