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Finding the Fourth Proportional to 101,149.97, 139,586.69 and 55,828.04

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Solution

The fourth proportional to 101,149.97, 139,586.69 and 55,828.04 is: 77,042.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,149.97 : 139,586.69 = 55,828.04 : x
  2. Step 2: Convert to fraction form
    101,149.97/139,586.69 = 55,828.04/x
  3. Step 3: Cross multiply
    101,149.97x = 139,586.69 × 55,828.04
  4. Step 4: Simplify right side
    101,149.97x = 7,792,850,754.42
  5. Step 5: Solve for x
    x = 7,792,850,754.42/101,149.97
  6. Step 6: Final answer
    x = 77,042.55

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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.