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Finding the Third Proportional to 39,316.50 and 85,545

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Solution

The third proportional to 39,316.50 and 85,545 is: 186,129.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,316.50 : 85,545 = 85,545 : x
  2. Step 2: Convert to fraction form
    39,316.50/85,545 = 85,545/x
  3. Step 3: Cross multiply
    39,316.50x = 85,545 × 85,545
  4. Step 4: Simplify right side
    39,316.50x = 7,317,947,025
  5. Step 5: Solve for x
    x = 7,317,947,025/39,316.50
  6. Step 6: Final answer
    x = 186,129.16

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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.