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Finding the Fourth Proportional to 8,715.93, 13,072.52 and 7,244.61

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Solution

The fourth proportional to 8,715.93, 13,072.52 and 7,244.61 is: 10,865.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,715.93 : 13,072.52 = 7,244.61 : x
  2. Step 2: Convert to fraction form
    8,715.93/13,072.52 = 7,244.61/x
  3. Step 3: Cross multiply
    8,715.93x = 13,072.52 × 7,244.61
  4. Step 4: Simplify right side
    8,715.93x = 94,705,309.12
  5. Step 5: Solve for x
    x = 94,705,309.12/8,715.93
  6. Step 6: Final answer
    x = 10,865.77

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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.