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Finding the Fourth Proportional to 15,896.87, 23,868.71 and 8,890.61

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Solution

The fourth proportional to 15,896.87, 23,868.71 and 8,890.61 is: 13,349.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,896.87 : 23,868.71 = 8,890.61 : x
  2. Step 2: Convert to fraction form
    15,896.87/23,868.71 = 8,890.61/x
  3. Step 3: Cross multiply
    15,896.87x = 23,868.71 × 8,890.61
  4. Step 4: Simplify right side
    15,896.87x = 212,207,433.13
  5. Step 5: Solve for x
    x = 212,207,433.13/15,896.87
  6. Step 6: Final answer
    x = 13,349.01

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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.