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Finding the Fourth Proportional to 22,291.55, 30,761.51 and 13,338.51

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Solution

The fourth proportional to 22,291.55, 30,761.51 and 13,338.51 is: 18,406.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,291.55 : 30,761.51 = 13,338.51 : x
  2. Step 2: Convert to fraction form
    22,291.55/30,761.51 = 13,338.51/x
  3. Step 3: Cross multiply
    22,291.55x = 30,761.51 × 13,338.51
  4. Step 4: Simplify right side
    22,291.55x = 410,312,708.75
  5. Step 5: Solve for x
    x = 410,312,708.75/22,291.55
  6. Step 6: Final answer
    x = 18,406.65

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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.