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Finding the Fourth Proportional to 5,578.73, 7,698.72 and 3,060.79

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Solution

The fourth proportional to 5,578.73, 7,698.72 and 3,060.79 is: 4,223.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,578.73 : 7,698.72 = 3,060.79 : x
  2. Step 2: Convert to fraction form
    5,578.73/7,698.72 = 3,060.79/x
  3. Step 3: Cross multiply
    5,578.73x = 7,698.72 × 3,060.79
  4. Step 4: Simplify right side
    5,578.73x = 23,564,138.29
  5. Step 5: Solve for x
    x = 23,564,138.29/5,578.73
  6. Step 6: Final answer
    x = 4,223.93

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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.