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Finding the Fourth Proportional to 12,832.68, 17,710.02 and 7,168.56

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Solution

The fourth proportional to 12,832.68, 17,710.02 and 7,168.56 is: 9,893.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,832.68 : 17,710.02 = 7,168.56 : x
  2. Step 2: Convert to fraction form
    12,832.68/17,710.02 = 7,168.56/x
  3. Step 3: Cross multiply
    12,832.68x = 17,710.02 × 7,168.56
  4. Step 4: Simplify right side
    12,832.68x = 126,955,340.97
  5. Step 5: Solve for x
    x = 126,955,340.97/12,832.68
  6. Step 6: Final answer
    x = 9,893.13

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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.