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Finding the Fourth Proportional to 18,765.54, 25,843.86 and 15,593.04

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Solution

The fourth proportional to 18,765.54, 25,843.86 and 15,593.04 is: 21,474.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,765.54 : 25,843.86 = 15,593.04 : x
  2. Step 2: Convert to fraction form
    18,765.54/25,843.86 = 15,593.04/x
  3. Step 3: Cross multiply
    18,765.54x = 25,843.86 × 15,593.04
  4. Step 4: Simplify right side
    18,765.54x = 402,984,342.73
  5. Step 5: Solve for x
    x = 402,984,342.73/18,765.54
  6. Step 6: Final answer
    x = 21,474.70

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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.