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Finding the Fourth Proportional to 197,626.88, 272,723.48 and 106,981

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Solution

The fourth proportional to 197,626.88, 272,723.48 and 106,981 is: 147,632.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,626.88 : 272,723.48 = 106,981 : x
  2. Step 2: Convert to fraction form
    197,626.88/272,723.48 = 106,981/x
  3. Step 3: Cross multiply
    197,626.88x = 272,723.48 × 106,981
  4. Step 4: Simplify right side
    197,626.88x = 29,176,230,613.88
  5. Step 5: Solve for x
    x = 29,176,230,613.88/197,626.88
  6. Step 6: Final answer
    x = 147,632.91

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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.