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Finding the Fourth Proportional to 22,292.76, 30,761.92 and 12,859.48

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Solution

The fourth proportional to 22,292.76, 30,761.92 and 12,859.48 is: 17,744.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,292.76 : 30,761.92 = 12,859.48 : x
  2. Step 2: Convert to fraction form
    22,292.76/30,761.92 = 12,859.48/x
  3. Step 3: Cross multiply
    22,292.76x = 30,761.92 × 12,859.48
  4. Step 4: Simplify right side
    22,292.76x = 395,582,295.00
  5. Step 5: Solve for x
    x = 395,582,295.00/22,292.76
  6. Step 6: Final answer
    x = 17,744.88

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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.