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Finding the Fourth Proportional to 18,963.78, 26,169.96 and 10,580.28

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Solution

The fourth proportional to 18,963.78, 26,169.96 and 10,580.28 is: 14,600.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,963.78 : 26,169.96 = 10,580.28 : x
  2. Step 2: Convert to fraction form
    18,963.78/26,169.96 = 10,580.28/x
  3. Step 3: Cross multiply
    18,963.78x = 26,169.96 × 10,580.28
  4. Step 4: Simplify right side
    18,963.78x = 276,885,504.39
  5. Step 5: Solve for x
    x = 276,885,504.39/18,963.78
  6. Step 6: Final answer
    x = 14,600.75

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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.