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Finding the Fourth Proportional to 62,478.40, 93,722.46 and 18,105.79

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Solution

The fourth proportional to 62,478.40, 93,722.46 and 18,105.79 is: 27,160.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,478.40 : 93,722.46 = 18,105.79 : x
  2. Step 2: Convert to fraction form
    62,478.40/93,722.46 = 18,105.79/x
  3. Step 3: Cross multiply
    62,478.40x = 93,722.46 × 18,105.79
  4. Step 4: Simplify right side
    62,478.40x = 1,696,919,179.04
  5. Step 5: Solve for x
    x = 1,696,919,179.04/62,478.40
  6. Step 6: Final answer
    x = 27,160.09

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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.