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Finding the Fourth Proportional to 18,425.97, 25,427.84 and 10,042.47

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Solution

The fourth proportional to 18,425.97, 25,427.84 and 10,042.47 is: 13,858.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,425.97 : 25,427.84 = 10,042.47 : x
  2. Step 2: Convert to fraction form
    18,425.97/25,427.84 = 10,042.47/x
  3. Step 3: Cross multiply
    18,425.97x = 25,427.84 × 10,042.47
  4. Step 4: Simplify right side
    18,425.97x = 255,358,320.36
  5. Step 5: Solve for x
    x = 255,358,320.36/18,425.97
  6. Step 6: Final answer
    x = 13,858.61

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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.