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Finding the Fourth Proportional to 29,317.96, 43,976.31 and 7,131.45

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Solution

The fourth proportional to 29,317.96, 43,976.31 and 7,131.45 is: 10,697.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,317.96 : 43,976.31 = 7,131.45 : x
  2. Step 2: Convert to fraction form
    29,317.96/43,976.31 = 7,131.45/x
  3. Step 3: Cross multiply
    29,317.96x = 43,976.31 × 7,131.45
  4. Step 4: Simplify right side
    29,317.96x = 313,614,855.95
  5. Step 5: Solve for x
    x = 313,614,855.95/29,317.96
  6. Step 6: Final answer
    x = 10,697.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.