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Finding the Third Proportional to 15,051.50 and 17,785

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Solution

The third proportional to 15,051.50 and 17,785 is: 21,014.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,051.50 : 17,785 = 17,785 : x
  2. Step 2: Convert to fraction form
    15,051.50/17,785 = 17,785/x
  3. Step 3: Cross multiply
    15,051.50x = 17,785 × 17,785
  4. Step 4: Simplify right side
    15,051.50x = 316,306,225
  5. Step 5: Solve for x
    x = 316,306,225/15,051.50
  6. Step 6: Final answer
    x = 21,014.93

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Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.