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Finding the Fourth Proportional to 5,785.87, 7,984.50 and 3,133.28

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Solution

The fourth proportional to 5,785.87, 7,984.50 and 3,133.28 is: 4,323.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,785.87 : 7,984.50 = 3,133.28 : x
  2. Step 2: Convert to fraction form
    5,785.87/7,984.50 = 3,133.28/x
  3. Step 3: Cross multiply
    5,785.87x = 7,984.50 × 3,133.28
  4. Step 4: Simplify right side
    5,785.87x = 25,017,674.16
  5. Step 5: Solve for x
    x = 25,017,674.16/5,785.87
  6. Step 6: Final answer
    x = 4,323.93

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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.