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Finding the Fourth Proportional to 125,362.11, 187,866.34 and 69,227.49

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Solution

The fourth proportional to 125,362.11, 187,866.34 and 69,227.49 is: 103,743.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,362.11 : 187,866.34 = 69,227.49 : x
  2. Step 2: Convert to fraction form
    125,362.11/187,866.34 = 69,227.49/x
  3. Step 3: Cross multiply
    125,362.11x = 187,866.34 × 69,227.49
  4. Step 4: Simplify right side
    125,362.11x = 13,005,515,173.69
  5. Step 5: Solve for x
    x = 13,005,515,173.69/125,362.11
  6. Step 6: Final answer
    x = 103,743.59

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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.