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Finding the Fourth Proportional to 8,161.74, 11,263.91 and 4,974.26

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Solution

The fourth proportional to 8,161.74, 11,263.91 and 4,974.26 is: 6,864.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,161.74 : 11,263.91 = 4,974.26 : x
  2. Step 2: Convert to fraction form
    8,161.74/11,263.91 = 4,974.26/x
  3. Step 3: Cross multiply
    8,161.74x = 11,263.91 × 4,974.26
  4. Step 4: Simplify right side
    8,161.74x = 56,029,535.77
  5. Step 5: Solve for x
    x = 56,029,535.77/8,161.74
  6. Step 6: Final answer
    x = 6,864.90

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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.