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Finding the Fourth Proportional to 5,079.93, 7,007.22 and 3,091.88

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Solution

The fourth proportional to 5,079.93, 7,007.22 and 3,091.88 is: 4,264.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,079.93 : 7,007.22 = 3,091.88 : x
  2. Step 2: Convert to fraction form
    5,079.93/7,007.22 = 3,091.88/x
  3. Step 3: Cross multiply
    5,079.93x = 7,007.22 × 3,091.88
  4. Step 4: Simplify right side
    5,079.93x = 21,665,448.34
  5. Step 5: Solve for x
    x = 21,665,448.34/5,079.93
  6. Step 6: Final answer
    x = 4,264.91

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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.