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Finding the Fourth Proportional to 12,236.70, 18,355.05 and 4,442.34

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Solution

The fourth proportional to 12,236.70, 18,355.05 and 4,442.34 is: 6,663.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,236.70 : 18,355.05 = 4,442.34 : x
  2. Step 2: Convert to fraction form
    12,236.70/18,355.05 = 4,442.34/x
  3. Step 3: Cross multiply
    12,236.70x = 18,355.05 × 4,442.34
  4. Step 4: Simplify right side
    12,236.70x = 81,539,372.82
  5. Step 5: Solve for x
    x = 81,539,372.82/12,236.70
  6. Step 6: Final answer
    x = 6,663.51

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.