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Finding the Fourth Proportional to 8,914.65, 12,325.71 and 7,807.49

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Solution

The fourth proportional to 8,914.65, 12,325.71 and 7,807.49 is: 10,794.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,914.65 : 12,325.71 = 7,807.49 : x
  2. Step 2: Convert to fraction form
    8,914.65/12,325.71 = 7,807.49/x
  3. Step 3: Cross multiply
    8,914.65x = 12,325.71 × 7,807.49
  4. Step 4: Simplify right side
    8,914.65x = 96,232,795.94
  5. Step 5: Solve for x
    x = 96,232,795.94/8,914.65
  6. Step 6: Final answer
    x = 10,794.90

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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.