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Finding the Fourth Proportional to 8,612.96, 11,885.84 and 4,836.18

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Solution

The fourth proportional to 8,612.96, 11,885.84 and 4,836.18 is: 6,673.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,612.96 : 11,885.84 = 4,836.18 : x
  2. Step 2: Convert to fraction form
    8,612.96/11,885.84 = 4,836.18/x
  3. Step 3: Cross multiply
    8,612.96x = 11,885.84 × 4,836.18
  4. Step 4: Simplify right side
    8,612.96x = 57,482,066.79
  5. Step 5: Solve for x
    x = 57,482,066.79/8,612.96
  6. Step 6: Final answer
    x = 6,673.91

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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.