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Finding the Fourth Proportional to 7,167, 10,748.64 and 3,216

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Solution

The fourth proportional to 7,167, 10,748.64 and 3,216 is: 4,823.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,167 : 10,748.64 = 3,216 : x
  2. Step 2: Convert to fraction form
    7,167/10,748.64 = 3,216/x
  3. Step 3: Cross multiply
    7,167x = 10,748.64 × 3,216
  4. Step 4: Simplify right side
    7,167x = 34,567,626.24
  5. Step 5: Solve for x
    x = 34,567,626.24/7,167
  6. Step 6: Final answer
    x = 4,823.17

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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.