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Finding the Fourth Proportional to 8,935.40, 13,388.70 and 7,466.60

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Solution

The fourth proportional to 8,935.40, 13,388.70 and 7,466.60 is: 11,187.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,935.40 : 13,388.70 = 7,466.60 : x
  2. Step 2: Convert to fraction form
    8,935.40/13,388.70 = 7,466.60/x
  3. Step 3: Cross multiply
    8,935.40x = 13,388.70 × 7,466.60
  4. Step 4: Simplify right side
    8,935.40x = 99,968,067.42
  5. Step 5: Solve for x
    x = 99,968,067.42/8,935.40
  6. Step 6: Final answer
    x = 11,187.87

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.