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Finding the Fourth Proportional to 8,811.64, 12,160.16 and 4,832.68

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Solution

The fourth proportional to 8,811.64, 12,160.16 and 4,832.68 is: 6,669.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.64 : 12,160.16 = 4,832.68 : x
  2. Step 2: Convert to fraction form
    8,811.64/12,160.16 = 4,832.68/x
  3. Step 3: Cross multiply
    8,811.64x = 12,160.16 × 4,832.68
  4. Step 4: Simplify right side
    8,811.64x = 58,766,162.03
  5. Step 5: Solve for x
    x = 58,766,162.03/8,811.64
  6. Step 6: Final answer
    x = 6,669.15

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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.