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Finding the Fourth Proportional to 22,398.72, 33,618.87 and 11,313.20

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Solution

The fourth proportional to 22,398.72, 33,618.87 and 11,313.20 is: 16,980.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,398.72 : 33,618.87 = 11,313.20 : x
  2. Step 2: Convert to fraction form
    22,398.72/33,618.87 = 11,313.20/x
  3. Step 3: Cross multiply
    22,398.72x = 33,618.87 × 11,313.20
  4. Step 4: Simplify right side
    22,398.72x = 380,337,000.08
  5. Step 5: Solve for x
    x = 380,337,000.08/22,398.72
  6. Step 6: Final answer
    x = 16,980.30

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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.