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Finding the Fourth Proportional to 18,233.20, 27,349.80 and 5,921.20

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Solution

The fourth proportional to 18,233.20, 27,349.80 and 5,921.20 is: 8,881.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,233.20 : 27,349.80 = 5,921.20 : x
  2. Step 2: Convert to fraction form
    18,233.20/27,349.80 = 5,921.20/x
  3. Step 3: Cross multiply
    18,233.20x = 27,349.80 × 5,921.20
  4. Step 4: Simplify right side
    18,233.20x = 161,943,635.76
  5. Step 5: Solve for x
    x = 161,943,635.76/18,233.20
  6. Step 6: Final answer
    x = 8,881.80

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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.