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Finding the Third Proportional to 14,080 and 21,985

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Solution

The third proportional to 14,080 and 21,985 is: 34,328.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,080 : 21,985 = 21,985 : x
  2. Step 2: Convert to fraction form
    14,080/21,985 = 21,985/x
  3. Step 3: Cross multiply
    14,080x = 21,985 × 21,985
  4. Step 4: Simplify right side
    14,080x = 483,340,225
  5. Step 5: Solve for x
    x = 483,340,225/14,080
  6. Step 6: Final answer
    x = 34,328.14

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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.