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Finding the Fourth Proportional to 12,213.66, 16,854.90 and 6,624.66

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Solution

The fourth proportional to 12,213.66, 16,854.90 and 6,624.66 is: 9,142.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,213.66 : 16,854.90 = 6,624.66 : x
  2. Step 2: Convert to fraction form
    12,213.66/16,854.90 = 6,624.66/x
  3. Step 3: Cross multiply
    12,213.66x = 16,854.90 × 6,624.66
  4. Step 4: Simplify right side
    12,213.66x = 111,657,981.83
  5. Step 5: Solve for x
    x = 111,657,981.83/12,213.66
  6. Step 6: Final answer
    x = 9,142.06

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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.