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Finding the Fourth Proportional to 8,447.92, 11,658.30 and 4,671.32

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Solution

The fourth proportional to 8,447.92, 11,658.30 and 4,671.32 is: 6,446.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,447.92 : 11,658.30 = 4,671.32 : x
  2. Step 2: Convert to fraction form
    8,447.92/11,658.30 = 4,671.32/x
  3. Step 3: Cross multiply
    8,447.92x = 11,658.30 × 4,671.32
  4. Step 4: Simplify right side
    8,447.92x = 54,459,649.96
  5. Step 5: Solve for x
    x = 54,459,649.96/8,447.92
  6. Step 6: Final answer
    x = 6,446.52

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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.