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Finding the Fourth Proportional to 69,898.93, 104,744.70 and 51,340.21

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Solution

The fourth proportional to 69,898.93, 104,744.70 and 51,340.21 is: 76,934.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,898.93 : 104,744.70 = 51,340.21 : x
  2. Step 2: Convert to fraction form
    69,898.93/104,744.70 = 51,340.21/x
  3. Step 3: Cross multiply
    69,898.93x = 104,744.70 × 51,340.21
  4. Step 4: Simplify right side
    69,898.93x = 5,377,614,894.39
  5. Step 5: Solve for x
    x = 5,377,614,894.39/69,898.93
  6. Step 6: Final answer
    x = 76,934.15

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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.