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Finding the Fourth Proportional to 69,976.84, 96,564.55 and 39,758.17

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Solution

The fourth proportional to 69,976.84, 96,564.55 and 39,758.17 is: 54,864.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,976.84 : 96,564.55 = 39,758.17 : x
  2. Step 2: Convert to fraction form
    69,976.84/96,564.55 = 39,758.17/x
  3. Step 3: Cross multiply
    69,976.84x = 96,564.55 × 39,758.17
  4. Step 4: Simplify right side
    69,976.84x = 3,839,229,596.08
  5. Step 5: Solve for x
    x = 3,839,229,596.08/69,976.84
  6. Step 6: Final answer
    x = 54,864.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.