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Finding the Fourth Proportional to 8,321.26, 11,480.46 and 4,961.77

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Solution

The fourth proportional to 8,321.26, 11,480.46 and 4,961.77 is: 6,845.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,321.26 : 11,480.46 = 4,961.77 : x
  2. Step 2: Convert to fraction form
    8,321.26/11,480.46 = 4,961.77/x
  3. Step 3: Cross multiply
    8,321.26x = 11,480.46 × 4,961.77
  4. Step 4: Simplify right side
    8,321.26x = 56,963,402.01
  5. Step 5: Solve for x
    x = 56,963,402.01/8,321.26
  6. Step 6: Final answer
    x = 6,845.53

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Half scale
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Double scale
Find fourth proportional to 8,322.26, 11,481.84 and 4,962.77
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.