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Finding the Fourth Proportional to 7,231.21, 9,976.31 and 5,347.33

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Solution

The fourth proportional to 7,231.21, 9,976.31 and 5,347.33 is: 7,377.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,231.21 : 9,976.31 = 5,347.33 : x
  2. Step 2: Convert to fraction form
    7,231.21/9,976.31 = 5,347.33/x
  3. Step 3: Cross multiply
    7,231.21x = 9,976.31 × 5,347.33
  4. Step 4: Simplify right side
    7,231.21x = 53,346,595.02
  5. Step 5: Solve for x
    x = 53,346,595.02/7,231.21
  6. Step 6: Final answer
    x = 7,377.27

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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.