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Finding the Fourth Proportional to 5,179.16, 7,796.76 and 4,719.89

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Solution

The fourth proportional to 5,179.16, 7,796.76 and 4,719.89 is: 7,105.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,179.16 : 7,796.76 = 4,719.89 : x
  2. Step 2: Convert to fraction form
    5,179.16/7,796.76 = 4,719.89/x
  3. Step 3: Cross multiply
    5,179.16x = 7,796.76 × 4,719.89
  4. Step 4: Simplify right side
    5,179.16x = 36,799,810.57
  5. Step 5: Solve for x
    x = 36,799,810.57/5,179.16
  6. Step 6: Final answer
    x = 7,105.37

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.