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Finding the Fourth Proportional to 19,220.52, 28,831.92 and 5,369.52

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Solution

The fourth proportional to 19,220.52, 28,831.92 and 5,369.52 is: 8,054.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,220.52 : 28,831.92 = 5,369.52 : x
  2. Step 2: Convert to fraction form
    19,220.52/28,831.92 = 5,369.52/x
  3. Step 3: Cross multiply
    19,220.52x = 28,831.92 × 5,369.52
  4. Step 4: Simplify right side
    19,220.52x = 154,813,571.08
  5. Step 5: Solve for x
    x = 154,813,571.08/19,220.52
  6. Step 6: Final answer
    x = 8,054.60

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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.