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Finding the Fourth Proportional to 14,825.91, 20,460.15 and 8,111.91

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Solution

The fourth proportional to 14,825.91, 20,460.15 and 8,111.91 is: 11,194.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,825.91 : 20,460.15 = 8,111.91 : x
  2. Step 2: Convert to fraction form
    14,825.91/20,460.15 = 8,111.91/x
  3. Step 3: Cross multiply
    14,825.91x = 20,460.15 × 8,111.91
  4. Step 4: Simplify right side
    14,825.91x = 165,970,895.39
  5. Step 5: Solve for x
    x = 165,970,895.39/14,825.91
  6. Step 6: Final answer
    x = 11,194.65

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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.