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Finding the Fourth Proportional to 5,755.72, 7,939.78 and 4,755.08

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Solution

The fourth proportional to 5,755.72, 7,939.78 and 4,755.08 is: 6,559.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,755.72 : 7,939.78 = 4,755.08 : x
  2. Step 2: Convert to fraction form
    5,755.72/7,939.78 = 4,755.08/x
  3. Step 3: Cross multiply
    5,755.72x = 7,939.78 × 4,755.08
  4. Step 4: Simplify right side
    5,755.72x = 37,754,289.08
  5. Step 5: Solve for x
    x = 37,754,289.08/5,755.72
  6. Step 6: Final answer
    x = 6,559.44

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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.