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Finding the Fourth Proportional to 17,861.61, 26,784.78 and 7,324.32

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Solution

The fourth proportional to 17,861.61, 26,784.78 and 7,324.32 is: 10,983.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,861.61 : 26,784.78 = 7,324.32 : x
  2. Step 2: Convert to fraction form
    17,861.61/26,784.78 = 7,324.32/x
  3. Step 3: Cross multiply
    17,861.61x = 26,784.78 × 7,324.32
  4. Step 4: Simplify right side
    17,861.61x = 196,180,372.83
  5. Step 5: Solve for x
    x = 196,180,372.83/17,861.61
  6. Step 6: Final answer
    x = 10,983.35

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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.