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Finding the Third Proportional to 85,448.75 and 186,979.50

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Solution

The third proportional to 85,448.75 and 186,979.50 is: 409,149.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,448.75 : 186,979.50 = 186,979.50 : x
  2. Step 2: Convert to fraction form
    85,448.75/186,979.50 = 186,979.50/x
  3. Step 3: Cross multiply
    85,448.75x = 186,979.50 × 186,979.50
  4. Step 4: Simplify right side
    85,448.75x = 34,961,333,420.25
  5. Step 5: Solve for x
    x = 34,961,333,420.25/85,448.75
  6. Step 6: Final answer
    x = 409,149.74

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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.