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Finding the Fourth Proportional to 5,486.99, 7,571.97 and 3,129.08

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Solution

The fourth proportional to 5,486.99, 7,571.97 and 3,129.08 is: 4,318.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,486.99 : 7,571.97 = 3,129.08 : x
  2. Step 2: Convert to fraction form
    5,486.99/7,571.97 = 3,129.08/x
  3. Step 3: Cross multiply
    5,486.99x = 7,571.97 × 3,129.08
  4. Step 4: Simplify right side
    5,486.99x = 23,693,262.03
  5. Step 5: Solve for x
    x = 23,693,262.03/5,486.99
  6. Step 6: Final answer
    x = 4,318.08

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1.5x scale

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.