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Finding the Third Proportional to 5,326 and 9,985

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Solution

The third proportional to 5,326 and 9,985 is: 18,719.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,326 : 9,985 = 9,985 : x
  2. Step 2: Convert to fraction form
    5,326/9,985 = 9,985/x
  3. Step 3: Cross multiply
    5,326x = 9,985 × 9,985
  4. Step 4: Simplify right side
    5,326x = 99,700,225
  5. Step 5: Solve for x
    x = 99,700,225/5,326
  6. Step 6: Final answer
    x = 18,719.53

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Why These Related Problems?

These problems maintain the same ratio (1.87) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.