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Finding the Third Proportional to 28,700 and 61,932

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Solution

The third proportional to 28,700 and 61,932 is: 133,643.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,700 : 61,932 = 61,932 : x
  2. Step 2: Convert to fraction form
    28,700/61,932 = 61,932/x
  3. Step 3: Cross multiply
    28,700x = 61,932 × 61,932
  4. Step 4: Simplify right side
    28,700x = 3,835,572,624
  5. Step 5: Solve for x
    x = 3,835,572,624/28,700
  6. Step 6: Final answer
    x = 133,643.65

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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.