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Finding the Fourth Proportional to 220,867.56, 304,790.54 and 122,750.46

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Solution

The fourth proportional to 220,867.56, 304,790.54 and 122,750.46 is: 169,391.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,867.56 : 304,790.54 = 122,750.46 : x
  2. Step 2: Convert to fraction form
    220,867.56/304,790.54 = 122,750.46/x
  3. Step 3: Cross multiply
    220,867.56x = 304,790.54 × 122,750.46
  4. Step 4: Simplify right side
    220,867.56x = 37,413,178,374.90
  5. Step 5: Solve for x
    x = 37,413,178,374.90/220,867.56
  6. Step 6: Final answer
    x = 169,391.91

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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.