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Finding the Fourth Proportional to 101,282.74, 139,758.11 and 55,957.97

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Solution

The fourth proportional to 101,282.74, 139,758.11 and 55,957.97 is: 77,215.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,282.74 : 139,758.11 = 55,957.97 : x
  2. Step 2: Convert to fraction form
    101,282.74/139,758.11 = 55,957.97/x
  3. Step 3: Cross multiply
    101,282.74x = 139,758.11 × 55,957.97
  4. Step 4: Simplify right side
    101,282.74x = 7,820,580,406.08
  5. Step 5: Solve for x
    x = 7,820,580,406.08/101,282.74
  6. Step 6: Final answer
    x = 77,215.33

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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.