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Finding the Fourth Proportional to 8,670.38, 11,965.12 and 4,944.38

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Solution

The fourth proportional to 8,670.38, 11,965.12 and 4,944.38 is: 6,823.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,670.38 : 11,965.12 = 4,944.38 : x
  2. Step 2: Convert to fraction form
    8,670.38/11,965.12 = 4,944.38/x
  3. Step 3: Cross multiply
    8,670.38x = 11,965.12 × 4,944.38
  4. Step 4: Simplify right side
    8,670.38x = 59,160,027.84
  5. Step 5: Solve for x
    x = 59,160,027.84/8,670.38
  6. Step 6: Final answer
    x = 6,823.24

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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.