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Finding the Fourth Proportional to 186,212.25, 279,362.12 and 61,553.25

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Solution

The fourth proportional to 186,212.25, 279,362.12 and 61,553.25 is: 92,344.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,212.25 : 279,362.12 = 61,553.25 : x
  2. Step 2: Convert to fraction form
    186,212.25/279,362.12 = 61,553.25/x
  3. Step 3: Cross multiply
    186,212.25x = 279,362.12 × 61,553.25
  4. Step 4: Simplify right side
    186,212.25x = 17,195,646,105.12
  5. Step 5: Solve for x
    x = 17,195,646,105.12/186,212.25
  6. Step 6: Final answer
    x = 92,344.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.