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Finding the Fourth Proportional to 21,913.70, 32,885.11 and 8,062.70

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Solution

The fourth proportional to 21,913.70, 32,885.11 and 8,062.70 is: 12,099.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,913.70 : 32,885.11 = 8,062.70 : x
  2. Step 2: Convert to fraction form
    21,913.70/32,885.11 = 8,062.70/x
  3. Step 3: Cross multiply
    21,913.70x = 32,885.11 × 8,062.70
  4. Step 4: Simplify right side
    21,913.70x = 265,142,776.40
  5. Step 5: Solve for x
    x = 265,142,776.40/21,913.70
  6. Step 6: Final answer
    x = 12,099.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.