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Finding the Fourth Proportional to 69,561, 95,994.18 and 39,753

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Solution

The fourth proportional to 69,561, 95,994.18 and 39,753 is: 54,859.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,561 : 95,994.18 = 39,753 : x
  2. Step 2: Convert to fraction form
    69,561/95,994.18 = 39,753/x
  3. Step 3: Cross multiply
    69,561x = 95,994.18 × 39,753
  4. Step 4: Simplify right side
    69,561x = 3,816,056,637.54
  5. Step 5: Solve for x
    x = 3,816,056,637.54/69,561
  6. Step 6: Final answer
    x = 54,859.14

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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.