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Finding the Fourth Proportional to 5,201.56, 7,211.15 and 4,921.03

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Solution

The fourth proportional to 5,201.56, 7,211.15 and 4,921.03 is: 6,822.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,201.56 : 7,211.15 = 4,921.03 : x
  2. Step 2: Convert to fraction form
    5,201.56/7,211.15 = 4,921.03/x
  3. Step 3: Cross multiply
    5,201.56x = 7,211.15 × 4,921.03
  4. Step 4: Simplify right side
    5,201.56x = 35,486,285.48
  5. Step 5: Solve for x
    x = 35,486,285.48/5,201.56
  6. Step 6: Final answer
    x = 6,822.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.