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Finding the Fourth Proportional to 3,301.91, 4,920.71 and 3,201.79

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Solution

The fourth proportional to 3,301.91, 4,920.71 and 3,201.79 is: 4,771.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,301.91 : 4,920.71 = 3,201.79 : x
  2. Step 2: Convert to fraction form
    3,301.91/4,920.71 = 3,201.79/x
  3. Step 3: Cross multiply
    3,301.91x = 4,920.71 × 3,201.79
  4. Step 4: Simplify right side
    3,301.91x = 15,755,090.42
  5. Step 5: Solve for x
    x = 15,755,090.42/3,301.91
  6. Step 6: Final answer
    x = 4,771.50

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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.