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Finding the Fourth Proportional to 7,201.75, 9,941.75 and 5,079.01

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Solution

The fourth proportional to 7,201.75, 9,941.75 and 5,079.01 is: 7,011.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,201.75 : 9,941.75 = 5,079.01 : x
  2. Step 2: Convert to fraction form
    7,201.75/9,941.75 = 5,079.01/x
  3. Step 3: Cross multiply
    7,201.75x = 9,941.75 × 5,079.01
  4. Step 4: Simplify right side
    7,201.75x = 50,494,247.67
  5. Step 5: Solve for x
    x = 50,494,247.67/7,201.75
  6. Step 6: Final answer
    x = 7,011.39

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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.