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Finding the Fourth Proportional to 5,718.74, 8,579.93 and 2,555.69

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Solution

The fourth proportional to 5,718.74, 8,579.93 and 2,555.69 is: 3,834.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,718.74 : 8,579.93 = 2,555.69 : x
  2. Step 2: Convert to fraction form
    5,718.74/8,579.93 = 2,555.69/x
  3. Step 3: Cross multiply
    5,718.74x = 8,579.93 × 2,555.69
  4. Step 4: Simplify right side
    5,718.74x = 21,927,585.62
  5. Step 5: Solve for x
    x = 21,927,585.62/5,718.74
  6. Step 6: Final answer
    x = 3,834.34

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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.