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Finding the Fourth Proportional to 8,612.13, 11,884.87 and 4,836.12

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Solution

The fourth proportional to 8,612.13, 11,884.87 and 4,836.12 is: 6,673.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,612.13 : 11,884.87 = 4,836.12 : x
  2. Step 2: Convert to fraction form
    8,612.13/11,884.87 = 4,836.12/x
  3. Step 3: Cross multiply
    8,612.13x = 11,884.87 × 4,836.12
  4. Step 4: Simplify right side
    8,612.13x = 57,476,657.50
  5. Step 5: Solve for x
    x = 57,476,657.50/8,612.13
  6. Step 6: Final answer
    x = 6,673.92

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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.