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Finding the Third Proportional to 10,130.50 and 15,811

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Solution

The third proportional to 10,130.50 and 15,811 is: 24,676.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,130.50 : 15,811 = 15,811 : x
  2. Step 2: Convert to fraction form
    10,130.50/15,811 = 15,811/x
  3. Step 3: Cross multiply
    10,130.50x = 15,811 × 15,811
  4. Step 4: Simplify right side
    10,130.50x = 249,987,721
  5. Step 5: Solve for x
    x = 249,987,721/10,130.50
  6. Step 6: Final answer
    x = 24,676.74

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.