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Finding the Fourth Proportional to 111,924.66, 154,558.65 and 71,101.97

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Solution

The fourth proportional to 111,924.66, 154,558.65 and 71,101.97 is: 98,185.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,924.66 : 154,558.65 = 71,101.97 : x
  2. Step 2: Convert to fraction form
    111,924.66/154,558.65 = 71,101.97/x
  3. Step 3: Cross multiply
    111,924.66x = 154,558.65 × 71,101.97
  4. Step 4: Simplify right side
    111,924.66x = 10,989,423,722.75
  5. Step 5: Solve for x
    x = 10,989,423,722.75/111,924.66
  6. Step 6: Final answer
    x = 98,185.91

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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.