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Finding the Fourth Proportional to 74,231, 111,067.50 and 52,087.58

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Solution

The fourth proportional to 74,231, 111,067.50 and 52,087.58 is: 77,935.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,231 : 111,067.50 = 52,087.58 : x
  2. Step 2: Convert to fraction form
    74,231/111,067.50 = 52,087.58/x
  3. Step 3: Cross multiply
    74,231x = 111,067.50 × 52,087.58
  4. Step 4: Simplify right side
    74,231x = 5,785,237,291.65
  5. Step 5: Solve for x
    x = 5,785,237,291.65/74,231
  6. Step 6: Final answer
    x = 77,935.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.