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Finding the Fourth Proportional to 8,853.80, 12,220.74 and 6,201.92

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Solution

The fourth proportional to 8,853.80, 12,220.74 and 6,201.92 is: 8,560.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,853.80 : 12,220.74 = 6,201.92 : x
  2. Step 2: Convert to fraction form
    8,853.80/12,220.74 = 6,201.92/x
  3. Step 3: Cross multiply
    8,853.80x = 12,220.74 × 6,201.92
  4. Step 4: Simplify right side
    8,853.80x = 75,792,051.82
  5. Step 5: Solve for x
    x = 75,792,051.82/8,853.80
  6. Step 6: Final answer
    x = 8,560.40

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Half scale
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Double scale
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Similar ratio
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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.