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Finding the Fourth Proportional to 18,200.78, 25,110.79 and 11,033.00

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Solution

The fourth proportional to 18,200.78, 25,110.79 and 11,033.00 is: 15,221.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,200.78 : 25,110.79 = 11,033.00 : x
  2. Step 2: Convert to fraction form
    18,200.78/25,110.79 = 11,033.00/x
  3. Step 3: Cross multiply
    18,200.78x = 25,110.79 × 11,033.00
  4. Step 4: Simplify right side
    18,200.78x = 277,047,220.52
  5. Step 5: Solve for x
    x = 277,047,220.52/18,200.78
  6. Step 6: Final answer
    x = 15,221.73

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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.