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Finding the Third Proportional to 14,158 and 15,418

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Solution

The third proportional to 14,158 and 15,418 is: 16,790.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,158 : 15,418 = 15,418 : x
  2. Step 2: Convert to fraction form
    14,158/15,418 = 15,418/x
  3. Step 3: Cross multiply
    14,158x = 15,418 × 15,418
  4. Step 4: Simplify right side
    14,158x = 237,714,724
  5. Step 5: Solve for x
    x = 237,714,724/14,158
  6. Step 6: Final answer
    x = 16,790.13

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.