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Finding the Fourth Proportional to 8,787.48, 13,133.74 and 8,086.98

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Solution

The fourth proportional to 8,787.48, 13,133.74 and 8,086.98 is: 12,086.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,787.48 : 13,133.74 = 8,086.98 : x
  2. Step 2: Convert to fraction form
    8,787.48/13,133.74 = 8,086.98/x
  3. Step 3: Cross multiply
    8,787.48x = 13,133.74 × 8,086.98
  4. Step 4: Simplify right side
    8,787.48x = 106,212,292.71
  5. Step 5: Solve for x
    x = 106,212,292.71/8,787.48
  6. Step 6: Final answer
    x = 12,086.77

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.