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Finding the Fourth Proportional to 7,240.58, 9,991.51 and 4,096.56

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Solution

The fourth proportional to 7,240.58, 9,991.51 and 4,096.56 is: 5,652.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,240.58 : 9,991.51 = 4,096.56 : x
  2. Step 2: Convert to fraction form
    7,240.58/9,991.51 = 4,096.56/x
  3. Step 3: Cross multiply
    7,240.58x = 9,991.51 × 4,096.56
  4. Step 4: Simplify right side
    7,240.58x = 40,930,820.21
  5. Step 5: Solve for x
    x = 40,930,820.21/7,240.58
  6. Step 6: Final answer
    x = 5,652.98

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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.