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Finding the Third Proportional to 7,005 and 15,139

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Solution

The third proportional to 7,005 and 15,139 is: 32,717.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,005 : 15,139 = 15,139 : x
  2. Step 2: Convert to fraction form
    7,005/15,139 = 15,139/x
  3. Step 3: Cross multiply
    7,005x = 15,139 × 15,139
  4. Step 4: Simplify right side
    7,005x = 229,189,321
  5. Step 5: Solve for x
    x = 229,189,321/7,005
  6. Step 6: Final answer
    x = 32,717.96

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.