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Finding the Fourth Proportional to 8,561.43, 11,813.40 and 5,202.45

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Solution

The fourth proportional to 8,561.43, 11,813.40 and 5,202.45 is: 7,178.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,561.43 : 11,813.40 = 5,202.45 : x
  2. Step 2: Convert to fraction form
    8,561.43/11,813.40 = 5,202.45/x
  3. Step 3: Cross multiply
    8,561.43x = 11,813.40 × 5,202.45
  4. Step 4: Simplify right side
    8,561.43x = 61,458,622.83
  5. Step 5: Solve for x
    x = 61,458,622.83/8,561.43
  6. Step 6: Final answer
    x = 7,178.55

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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.