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Finding the Fourth Proportional to 18,761.01, 25,889.22 and 10,261.47

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Solution

The fourth proportional to 18,761.01, 25,889.22 and 10,261.47 is: 14,160.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,761.01 : 25,889.22 = 10,261.47 : x
  2. Step 2: Convert to fraction form
    18,761.01/25,889.22 = 10,261.47/x
  3. Step 3: Cross multiply
    18,761.01x = 25,889.22 × 10,261.47
  4. Step 4: Simplify right side
    18,761.01x = 265,661,454.35
  5. Step 5: Solve for x
    x = 265,661,454.35/18,761.01
  6. Step 6: Final answer
    x = 14,160.30

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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.