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Finding the Fourth Proportional to 12,707.92, 17,531.02 and 8,233.18

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Solution

The fourth proportional to 12,707.92, 17,531.02 and 8,233.18 is: 11,357.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,707.92 : 17,531.02 = 8,233.18 : x
  2. Step 2: Convert to fraction form
    12,707.92/17,531.02 = 8,233.18/x
  3. Step 3: Cross multiply
    12,707.92x = 17,531.02 × 8,233.18
  4. Step 4: Simplify right side
    12,707.92x = 144,336,043.24
  5. Step 5: Solve for x
    x = 144,336,043.24/12,707.92
  6. Step 6: Final answer
    x = 11,357.96

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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.