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Finding the Fourth Proportional to 111,838.47, 154,286.24 and 66,490.73

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Solution

The fourth proportional to 111,838.47, 154,286.24 and 66,490.73 is: 91,726.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,838.47 : 154,286.24 = 66,490.73 : x
  2. Step 2: Convert to fraction form
    111,838.47/154,286.24 = 66,490.73/x
  3. Step 3: Cross multiply
    111,838.47x = 154,286.24 × 66,490.73
  4. Step 4: Simplify right side
    111,838.47x = 10,258,603,622.67
  5. Step 5: Solve for x
    x = 10,258,603,622.67/111,838.47
  6. Step 6: Final answer
    x = 91,726.97

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1.5x scale

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.