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Finding the Fourth Proportional to 18,902.97, 26,087.27 and 15,753.69

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Solution

The fourth proportional to 18,902.97, 26,087.27 and 15,753.69 is: 21,741.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,902.97 : 26,087.27 = 15,753.69 : x
  2. Step 2: Convert to fraction form
    18,902.97/26,087.27 = 15,753.69/x
  3. Step 3: Cross multiply
    18,902.97x = 26,087.27 × 15,753.69
  4. Step 4: Simplify right side
    18,902.97x = 410,970,685.76
  5. Step 5: Solve for x
    x = 410,970,685.76/18,902.97
  6. Step 6: Final answer
    x = 21,741.06

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Half scale
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Double scale
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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.