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Finding the Fourth Proportional to 5,173.72, 7,723.02 and 4,788.24

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Solution

The fourth proportional to 5,173.72, 7,723.02 and 4,788.24 is: 7,147.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,173.72 : 7,723.02 = 4,788.24 : x
  2. Step 2: Convert to fraction form
    5,173.72/7,723.02 = 4,788.24/x
  3. Step 3: Cross multiply
    5,173.72x = 7,723.02 × 4,788.24
  4. Step 4: Simplify right side
    5,173.72x = 36,979,673.28
  5. Step 5: Solve for x
    x = 36,979,673.28/5,173.72
  6. Step 6: Final answer
    x = 7,147.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.