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Finding the Fourth Proportional to 4,921.11, 7,373.45 and 3,457.64

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Solution

The fourth proportional to 4,921.11, 7,373.45 and 3,457.64 is: 5,180.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,921.11 : 7,373.45 = 3,457.64 : x
  2. Step 2: Convert to fraction form
    4,921.11/7,373.45 = 3,457.64/x
  3. Step 3: Cross multiply
    4,921.11x = 7,373.45 × 3,457.64
  4. Step 4: Simplify right side
    4,921.11x = 25,494,743.29
  5. Step 5: Solve for x
    x = 25,494,743.29/4,921.11
  6. Step 6: Final answer
    x = 5,180.69

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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.