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Finding the Fourth Proportional to 8,414.76, 11,612.76 and 4,879.08

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Solution

The fourth proportional to 8,414.76, 11,612.76 and 4,879.08 is: 6,733.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,414.76 : 11,612.76 = 4,879.08 : x
  2. Step 2: Convert to fraction form
    8,414.76/11,612.76 = 4,879.08/x
  3. Step 3: Cross multiply
    8,414.76x = 11,612.76 × 4,879.08
  4. Step 4: Simplify right side
    8,414.76x = 56,659,585.06
  5. Step 5: Solve for x
    x = 56,659,585.06/8,414.76
  6. Step 6: Final answer
    x = 6,733.36

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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.