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Finding the Fourth Proportional to 111,856.66, 154,327.44 and 63,450.61

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Solution

The fourth proportional to 111,856.66, 154,327.44 and 63,450.61 is: 87,542.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,856.66 : 154,327.44 = 63,450.61 : x
  2. Step 2: Convert to fraction form
    111,856.66/154,327.44 = 63,450.61/x
  3. Step 3: Cross multiply
    111,856.66x = 154,327.44 × 63,450.61
  4. Step 4: Simplify right side
    111,856.66x = 9,792,170,207.74
  5. Step 5: Solve for x
    x = 9,792,170,207.74/111,856.66
  6. Step 6: Final answer
    x = 87,542.13

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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.