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Finding the Fourth Proportional to 8,753.87, 12,078.11 and 5,349.98

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Solution

The fourth proportional to 8,753.87, 12,078.11 and 5,349.98 is: 7,381.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,753.87 : 12,078.11 = 5,349.98 : x
  2. Step 2: Convert to fraction form
    8,753.87/12,078.11 = 5,349.98/x
  3. Step 3: Cross multiply
    8,753.87x = 12,078.11 × 5,349.98
  4. Step 4: Simplify right side
    8,753.87x = 64,617,690.51
  5. Step 5: Solve for x
    x = 64,617,690.51/8,753.87
  6. Step 6: Final answer
    x = 7,381.61

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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.