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Finding the Fourth Proportional to 10,861.75, 14,989.22 and 5,893.75

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Solution

The fourth proportional to 10,861.75, 14,989.22 and 5,893.75 is: 8,133.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,861.75 : 14,989.22 = 5,893.75 : x
  2. Step 2: Convert to fraction form
    10,861.75/14,989.22 = 5,893.75/x
  3. Step 3: Cross multiply
    10,861.75x = 14,989.22 × 5,893.75
  4. Step 4: Simplify right side
    10,861.75x = 88,342,715.38
  5. Step 5: Solve for x
    x = 88,342,715.38/10,861.75
  6. Step 6: Final answer
    x = 8,133.38

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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.