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Finding the Fourth Proportional to 14,874.61, 20,528.26 and 8,161.54

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Solution

The fourth proportional to 14,874.61, 20,528.26 and 8,161.54 is: 11,263.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,874.61 : 20,528.26 = 8,161.54 : x
  2. Step 2: Convert to fraction form
    14,874.61/20,528.26 = 8,161.54/x
  3. Step 3: Cross multiply
    14,874.61x = 20,528.26 × 8,161.54
  4. Step 4: Simplify right side
    14,874.61x = 167,542,215.12
  5. Step 5: Solve for x
    x = 167,542,215.12/14,874.61
  6. Step 6: Final answer
    x = 11,263.64

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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.