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Finding the Fourth Proportional to 17,939.10, 26,911.91 and 7,403.38

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Solution

The fourth proportional to 17,939.10, 26,911.91 and 7,403.38 is: 11,106.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,939.10 : 26,911.91 = 7,403.38 : x
  2. Step 2: Convert to fraction form
    17,939.10/26,911.91 = 7,403.38/x
  3. Step 3: Cross multiply
    17,939.10x = 26,911.91 × 7,403.38
  4. Step 4: Simplify right side
    17,939.10x = 199,239,085.86
  5. Step 5: Solve for x
    x = 199,239,085.86/17,939.10
  6. Step 6: Final answer
    x = 11,106.41

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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.