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Finding the Fourth Proportional to 29,963.92, 41,342.84 and 18,319.20

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Solution

The fourth proportional to 29,963.92, 41,342.84 and 18,319.20 is: 25,275.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,963.92 : 41,342.84 = 18,319.20 : x
  2. Step 2: Convert to fraction form
    29,963.92/41,342.84 = 18,319.20/x
  3. Step 3: Cross multiply
    29,963.92x = 41,342.84 × 18,319.20
  4. Step 4: Simplify right side
    29,963.92x = 757,367,754.53
  5. Step 5: Solve for x
    x = 757,367,754.53/29,963.92
  6. Step 6: Final answer
    x = 25,275.99

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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.