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Finding the Fourth Proportional to 22,905.72, 34,356.06 and 7,321.32

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Solution

The fourth proportional to 22,905.72, 34,356.06 and 7,321.32 is: 10,981.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,905.72 : 34,356.06 = 7,321.32 : x
  2. Step 2: Convert to fraction form
    22,905.72/34,356.06 = 7,321.32/x
  3. Step 3: Cross multiply
    22,905.72x = 34,356.06 × 7,321.32
  4. Step 4: Simplify right side
    22,905.72x = 251,531,709.20
  5. Step 5: Solve for x
    x = 251,531,709.20/22,905.72
  6. Step 6: Final answer
    x = 10,981.17

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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.