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Finding the Fourth Proportional to 16,879.15, 23,294.64 and 9,805.15

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Solution

The fourth proportional to 16,879.15, 23,294.64 and 9,805.15 is: 13,531.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,879.15 : 23,294.64 = 9,805.15 : x
  2. Step 2: Convert to fraction form
    16,879.15/23,294.64 = 9,805.15/x
  3. Step 3: Cross multiply
    16,879.15x = 23,294.64 × 9,805.15
  4. Step 4: Simplify right side
    16,879.15x = 228,407,439.40
  5. Step 5: Solve for x
    x = 228,407,439.40/16,879.15
  6. Step 6: Final answer
    x = 13,531.93

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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.