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Finding the Fourth Proportional to 4,811.72, 7,229.74 and 4,617.32

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Solution

The fourth proportional to 4,811.72, 7,229.74 and 4,617.32 is: 6,937.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,811.72 : 7,229.74 = 4,617.32 : x
  2. Step 2: Convert to fraction form
    4,811.72/7,229.74 = 4,617.32/x
  3. Step 3: Cross multiply
    4,811.72x = 7,229.74 × 4,617.32
  4. Step 4: Simplify right side
    4,811.72x = 33,382,023.10
  5. Step 5: Solve for x
    x = 33,382,023.10/4,811.72
  6. Step 6: Final answer
    x = 6,937.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.