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Finding the Fourth Proportional to 16,211.81, 22,372.34 and 8,759.81

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Solution

The fourth proportional to 16,211.81, 22,372.34 and 8,759.81 is: 12,088.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,211.81 : 22,372.34 = 8,759.81 : x
  2. Step 2: Convert to fraction form
    16,211.81/22,372.34 = 8,759.81/x
  3. Step 3: Cross multiply
    16,211.81x = 22,372.34 × 8,759.81
  4. Step 4: Simplify right side
    16,211.81x = 195,977,459.79
  5. Step 5: Solve for x
    x = 195,977,459.79/16,211.81
  6. Step 6: Final answer
    x = 12,088.56

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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.