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Finding the Third Proportional to 39,861.50 and 83,854

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Solution

The third proportional to 39,861.50 and 83,854 is: 176,398.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,861.50 : 83,854 = 83,854 : x
  2. Step 2: Convert to fraction form
    39,861.50/83,854 = 83,854/x
  3. Step 3: Cross multiply
    39,861.50x = 83,854 × 83,854
  4. Step 4: Simplify right side
    39,861.50x = 7,031,493,316
  5. Step 5: Solve for x
    x = 7,031,493,316/39,861.50
  6. Step 6: Final answer
    x = 176,398.11

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.