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Finding the Fourth Proportional to 19,297.80, 28,951.25 and 15,363.93

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Solution

The fourth proportional to 19,297.80, 28,951.25 and 15,363.93 is: 23,049.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,297.80 : 28,951.25 = 15,363.93 : x
  2. Step 2: Convert to fraction form
    19,297.80/28,951.25 = 15,363.93/x
  3. Step 3: Cross multiply
    19,297.80x = 28,951.25 × 15,363.93
  4. Step 4: Simplify right side
    19,297.80x = 444,804,978.41
  5. Step 5: Solve for x
    x = 444,804,978.41/19,297.80
  6. Step 6: Final answer
    x = 23,049.52

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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.