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Finding the Fourth Proportional to 7,508.74, 10,361.72 and 4,321.90

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Solution

The fourth proportional to 7,508.74, 10,361.72 and 4,321.90 is: 5,964.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,508.74 : 10,361.72 = 4,321.90 : x
  2. Step 2: Convert to fraction form
    7,508.74/10,361.72 = 4,321.90/x
  3. Step 3: Cross multiply
    7,508.74x = 10,361.72 × 4,321.90
  4. Step 4: Simplify right side
    7,508.74x = 44,782,317.67
  5. Step 5: Solve for x
    x = 44,782,317.67/7,508.74
  6. Step 6: Final answer
    x = 5,964.03

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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.