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Finding the Fourth Proportional to 5,571.84, 7,687.52 and 4,389.12

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Solution

The fourth proportional to 5,571.84, 7,687.52 and 4,389.12 is: 6,055.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,571.84 : 7,687.52 = 4,389.12 : x
  2. Step 2: Convert to fraction form
    5,571.84/7,687.52 = 4,389.12/x
  3. Step 3: Cross multiply
    5,571.84x = 7,687.52 × 4,389.12
  4. Step 4: Simplify right side
    5,571.84x = 33,741,447.78
  5. Step 5: Solve for x
    x = 33,741,447.78/5,571.84
  6. Step 6: Final answer
    x = 6,055.71

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Double scale
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Similar ratio
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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.