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Finding the Fourth Proportional to 22,200.78, 30,643.20 and 13,254.33

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Solution

The fourth proportional to 22,200.78, 30,643.20 and 13,254.33 is: 18,294.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,200.78 : 30,643.20 = 13,254.33 : x
  2. Step 2: Convert to fraction form
    22,200.78/30,643.20 = 13,254.33/x
  3. Step 3: Cross multiply
    22,200.78x = 30,643.20 × 13,254.33
  4. Step 4: Simplify right side
    22,200.78x = 406,155,085.06
  5. Step 5: Solve for x
    x = 406,155,085.06/22,200.78
  6. Step 6: Final answer
    x = 18,294.63

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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.