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Finding the Fourth Proportional to 4,917.99, 7,372.18 and 3,158.07

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Solution

The fourth proportional to 4,917.99, 7,372.18 and 3,158.07 is: 4,734.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,917.99 : 7,372.18 = 3,158.07 : x
  2. Step 2: Convert to fraction form
    4,917.99/7,372.18 = 3,158.07/x
  3. Step 3: Cross multiply
    4,917.99x = 7,372.18 × 3,158.07
  4. Step 4: Simplify right side
    4,917.99x = 23,281,860.49
  5. Step 5: Solve for x
    x = 23,281,860.49/4,917.99
  6. Step 6: Final answer
    x = 4,734.02

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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.