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Finding the Fourth Proportional to 5,859.99, 8,120.70 and 5,749.25

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Solution

The fourth proportional to 5,859.99, 8,120.70 and 5,749.25 is: 7,967.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,859.99 : 8,120.70 = 5,749.25 : x
  2. Step 2: Convert to fraction form
    5,859.99/8,120.70 = 5,749.25/x
  3. Step 3: Cross multiply
    5,859.99x = 8,120.70 × 5,749.25
  4. Step 4: Simplify right side
    5,859.99x = 46,687,893.87
  5. Step 5: Solve for x
    x = 46,687,893.87/5,859.99
  6. Step 6: Final answer
    x = 7,967.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.