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Finding the Third Proportional to 99,322 and 216,494

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Solution

The third proportional to 99,322 and 216,494 is: 471,895.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,322 : 216,494 = 216,494 : x
  2. Step 2: Convert to fraction form
    99,322/216,494 = 216,494/x
  3. Step 3: Cross multiply
    99,322x = 216,494 × 216,494
  4. Step 4: Simplify right side
    99,322x = 46,869,652,036
  5. Step 5: Solve for x
    x = 46,869,652,036/99,322
  6. Step 6: Final answer
    x = 471,895.98

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.