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Finding the Fourth Proportional to 8,821.65, 12,174.02 and 4,843.13

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Solution

The fourth proportional to 8,821.65, 12,174.02 and 4,843.13 is: 6,683.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,821.65 : 12,174.02 = 4,843.13 : x
  2. Step 2: Convert to fraction form
    8,821.65/12,174.02 = 4,843.13/x
  3. Step 3: Cross multiply
    8,821.65x = 12,174.02 × 4,843.13
  4. Step 4: Simplify right side
    8,821.65x = 58,960,361.48
  5. Step 5: Solve for x
    x = 58,960,361.48/8,821.65
  6. Step 6: Final answer
    x = 6,683.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.