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Finding the Fourth Proportional to 18,456.60, 25,473.60 and 11,560.97

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Solution

The fourth proportional to 18,456.60, 25,473.60 and 11,560.97 is: 15,956.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,456.60 : 25,473.60 = 11,560.97 : x
  2. Step 2: Convert to fraction form
    18,456.60/25,473.60 = 11,560.97/x
  3. Step 3: Cross multiply
    18,456.60x = 25,473.60 × 11,560.97
  4. Step 4: Simplify right side
    18,456.60x = 294,499,398.02
  5. Step 5: Solve for x
    x = 294,499,398.02/18,456.60
  6. Step 6: Final answer
    x = 15,956.32

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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.