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Finding the Fourth Proportional to 22,412.74, 30,922.63 and 12,720.61

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Solution

The fourth proportional to 22,412.74, 30,922.63 and 12,720.61 is: 17,550.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,412.74 : 30,922.63 = 12,720.61 : x
  2. Step 2: Convert to fraction form
    22,412.74/30,922.63 = 12,720.61/x
  3. Step 3: Cross multiply
    22,412.74x = 30,922.63 × 12,720.61
  4. Step 4: Simplify right side
    22,412.74x = 393,354,892.78
  5. Step 5: Solve for x
    x = 393,354,892.78/22,412.74
  6. Step 6: Final answer
    x = 17,550.50

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