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Finding the Fourth Proportional to 111,935.52, 154,470.24 and 61,634.52

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Solution

The fourth proportional to 111,935.52, 154,470.24 and 61,634.52 is: 85,055.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,935.52 : 154,470.24 = 61,634.52 : x
  2. Step 2: Convert to fraction form
    111,935.52/154,470.24 = 61,634.52/x
  3. Step 3: Cross multiply
    111,935.52x = 154,470.24 × 61,634.52
  4. Step 4: Simplify right side
    111,935.52x = 9,520,699,096.68
  5. Step 5: Solve for x
    x = 9,520,699,096.68/111,935.52
  6. Step 6: Final answer
    x = 85,055.21

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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.