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Finding the Fourth Proportional to 69,191.79, 103,787.67 and 49,508.79

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Solution

The fourth proportional to 69,191.79, 103,787.67 and 49,508.79 is: 74,263.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,191.79 : 103,787.67 = 49,508.79 : x
  2. Step 2: Convert to fraction form
    69,191.79/103,787.67 = 49,508.79/x
  3. Step 3: Cross multiply
    69,191.79x = 103,787.67 × 49,508.79
  4. Step 4: Simplify right side
    69,191.79x = 5,138,401,958.62
  5. Step 5: Solve for x
    x = 5,138,401,958.62/69,191.79
  6. Step 6: Final answer
    x = 74,263.17

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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.