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Finding the Fourth Proportional to 10,868.36, 14,990.94 and 6,616.49

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Solution

The fourth proportional to 10,868.36, 14,990.94 and 6,616.49 is: 9,126.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,868.36 : 14,990.94 = 6,616.49 : x
  2. Step 2: Convert to fraction form
    10,868.36/14,990.94 = 6,616.49/x
  3. Step 3: Cross multiply
    10,868.36x = 14,990.94 × 6,616.49
  4. Step 4: Simplify right side
    10,868.36x = 99,187,329.65
  5. Step 5: Solve for x
    x = 99,187,329.65/10,868.36
  6. Step 6: Final answer
    x = 9,126.25

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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.