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Finding the Third Proportional to 99,324 and 217,216.50

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Solution

The third proportional to 99,324 and 217,216.50 is: 475,041.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,324 : 217,216.50 = 217,216.50 : x
  2. Step 2: Convert to fraction form
    99,324/217,216.50 = 217,216.50/x
  3. Step 3: Cross multiply
    99,324x = 217,216.50 × 217,216.50
  4. Step 4: Simplify right side
    99,324x = 47,183,007,872.25
  5. Step 5: Solve for x
    x = 47,183,007,872.25/99,324
  6. Step 6: Final answer
    x = 475,041.36

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.