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Finding the Fourth Proportional to 18,251.76, 25,186.80 and 10,292.96

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Solution

The fourth proportional to 18,251.76, 25,186.80 and 10,292.96 is: 14,203.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,251.76 : 25,186.80 = 10,292.96 : x
  2. Step 2: Convert to fraction form
    18,251.76/25,186.80 = 10,292.96/x
  3. Step 3: Cross multiply
    18,251.76x = 25,186.80 × 10,292.96
  4. Step 4: Simplify right side
    18,251.76x = 259,246,724.93
  5. Step 5: Solve for x
    x = 259,246,724.93/18,251.76
  6. Step 6: Final answer
    x = 14,203.93

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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.