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Finding the Fourth Proportional to 18,398.56, 27,598.72 and 5,252.84

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Solution

The fourth proportional to 18,398.56, 27,598.72 and 5,252.84 is: 7,879.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,398.56 : 27,598.72 = 5,252.84 : x
  2. Step 2: Convert to fraction form
    18,398.56/27,598.72 = 5,252.84/x
  3. Step 3: Cross multiply
    18,398.56x = 27,598.72 × 5,252.84
  4. Step 4: Simplify right side
    18,398.56x = 144,971,660.36
  5. Step 5: Solve for x
    x = 144,971,660.36/18,398.56
  6. Step 6: Final answer
    x = 7,879.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.