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Finding the Fourth Proportional to 18,719.92, 25,825.80 and 10,760.32

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Solution

The fourth proportional to 18,719.92, 25,825.80 and 10,760.32 is: 14,844.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,719.92 : 25,825.80 = 10,760.32 : x
  2. Step 2: Convert to fraction form
    18,719.92/25,825.80 = 10,760.32/x
  3. Step 3: Cross multiply
    18,719.92x = 25,825.80 × 10,760.32
  4. Step 4: Simplify right side
    18,719.92x = 277,893,872.26
  5. Step 5: Solve for x
    x = 277,893,872.26/18,719.92
  6. Step 6: Final answer
    x = 14,844.82

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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.