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Finding the Fourth Proportional to 125,362.18, 187,866.45 and 69,227.56

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Solution

The fourth proportional to 125,362.18, 187,866.45 and 69,227.56 is: 103,743.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,362.18 : 187,866.45 = 69,227.56 : x
  2. Step 2: Convert to fraction form
    125,362.18/187,866.45 = 69,227.56/x
  3. Step 3: Cross multiply
    125,362.18x = 187,866.45 × 69,227.56
  4. Step 4: Simplify right side
    125,362.18x = 13,005,534,653.89
  5. Step 5: Solve for x
    x = 13,005,534,653.89/125,362.18
  6. Step 6: Final answer
    x = 103,743.69

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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.