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Finding the Third Proportional to 39,317.50 and 85,547

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Solution

The third proportional to 39,317.50 and 85,547 is: 186,133.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,317.50 : 85,547 = 85,547 : x
  2. Step 2: Convert to fraction form
    39,317.50/85,547 = 85,547/x
  3. Step 3: Cross multiply
    39,317.50x = 85,547 × 85,547
  4. Step 4: Simplify right side
    39,317.50x = 7,318,289,209
  5. Step 5: Solve for x
    x = 7,318,289,209/39,317.50
  6. Step 6: Final answer
    x = 186,133.13

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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.