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Finding the Fourth Proportional to 22,290.55, 30,760.13 and 13,337.51

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Solution

The fourth proportional to 22,290.55, 30,760.13 and 13,337.51 is: 18,405.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,290.55 : 30,760.13 = 13,337.51 : x
  2. Step 2: Convert to fraction form
    22,290.55/30,760.13 = 13,337.51/x
  3. Step 3: Cross multiply
    22,290.55x = 30,760.13 × 13,337.51
  4. Step 4: Simplify right side
    22,290.55x = 410,263,421.02
  5. Step 5: Solve for x
    x = 410,263,421.02/22,290.55
  6. Step 6: Final answer
    x = 18,405.26

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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.