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Finding the Fourth Proportional to 8,368.16, 12,552.72 and 2,212

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Solution

The fourth proportional to 8,368.16, 12,552.72 and 2,212 is: 3,318.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,368.16 : 12,552.72 = 2,212 : x
  2. Step 2: Convert to fraction form
    8,368.16/12,552.72 = 2,212/x
  3. Step 3: Cross multiply
    8,368.16x = 12,552.72 × 2,212
  4. Step 4: Simplify right side
    8,368.16x = 27,766,616.64
  5. Step 5: Solve for x
    x = 27,766,616.64/8,368.16
  6. Step 6: Final answer
    x = 3,318.13

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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.