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Finding the Fourth Proportional to 8,908.66, 13,360.14 and 4,961.80

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Solution

The fourth proportional to 8,908.66, 13,360.14 and 4,961.80 is: 7,441.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,908.66 : 13,360.14 = 4,961.80 : x
  2. Step 2: Convert to fraction form
    8,908.66/13,360.14 = 4,961.80/x
  3. Step 3: Cross multiply
    8,908.66x = 13,360.14 × 4,961.80
  4. Step 4: Simplify right side
    8,908.66x = 66,290,342.65
  5. Step 5: Solve for x
    x = 66,290,342.65/8,908.66
  6. Step 6: Final answer
    x = 7,441.11

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Why These Related Problems?

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