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Finding the Fourth Proportional to 8,928.56, 12,321.42 and 4,950.28

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Solution

The fourth proportional to 8,928.56, 12,321.42 and 4,950.28 is: 6,831.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,928.56 : 12,321.42 = 4,950.28 : x
  2. Step 2: Convert to fraction form
    8,928.56/12,321.42 = 4,950.28/x
  3. Step 3: Cross multiply
    8,928.56x = 12,321.42 × 4,950.28
  4. Step 4: Simplify right side
    8,928.56x = 60,994,475.84
  5. Step 5: Solve for x
    x = 60,994,475.84/8,928.56
  6. Step 6: Final answer
    x = 6,831.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.