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Finding the Fourth Proportional to 19,222.77, 28,835.30 and 5,371.77

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Solution

The fourth proportional to 19,222.77, 28,835.30 and 5,371.77 is: 8,057.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,222.77 : 28,835.30 = 5,371.77 : x
  2. Step 2: Convert to fraction form
    19,222.77/28,835.30 = 5,371.77/x
  3. Step 3: Cross multiply
    19,222.77x = 28,835.30 × 5,371.77
  4. Step 4: Simplify right side
    19,222.77x = 154,896,572.62
  5. Step 5: Solve for x
    x = 154,896,572.62/19,222.77
  6. Step 6: Final answer
    x = 8,057.97

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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.