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Finding the Third Proportional to 14,710 and 31,891

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Solution

The third proportional to 14,710 and 31,891 is: 69,139.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,710 : 31,891 = 31,891 : x
  2. Step 2: Convert to fraction form
    14,710/31,891 = 31,891/x
  3. Step 3: Cross multiply
    14,710x = 31,891 × 31,891
  4. Step 4: Simplify right side
    14,710x = 1,017,035,881
  5. Step 5: Solve for x
    x = 1,017,035,881/14,710
  6. Step 6: Final answer
    x = 69,139.08

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.