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Finding the Fourth Proportional to 12,608.66, 17,398.80 and 12,184.02

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Solution

The fourth proportional to 12,608.66, 17,398.80 and 12,184.02 is: 16,812.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,608.66 : 17,398.80 = 12,184.02 : x
  2. Step 2: Convert to fraction form
    12,608.66/17,398.80 = 12,184.02/x
  3. Step 3: Cross multiply
    12,608.66x = 17,398.80 × 12,184.02
  4. Step 4: Simplify right side
    12,608.66x = 211,987,327.18
  5. Step 5: Solve for x
    x = 211,987,327.18/12,608.66
  6. Step 6: Final answer
    x = 16,812.83

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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.