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Finding the Fourth Proportional to 8,440.76, 11,648.22 and 4,663.82

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Solution

The fourth proportional to 8,440.76, 11,648.22 and 4,663.82 is: 6,436.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,440.76 : 11,648.22 = 4,663.82 : x
  2. Step 2: Convert to fraction form
    8,440.76/11,648.22 = 4,663.82/x
  3. Step 3: Cross multiply
    8,440.76x = 11,648.22 × 4,663.82
  4. Step 4: Simplify right side
    8,440.76x = 54,325,201.40
  5. Step 5: Solve for x
    x = 54,325,201.40/8,440.76
  6. Step 6: Final answer
    x = 6,436.06

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Half scale
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Double scale
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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.