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Finding the Fourth Proportional to 5,168.97, 7,133.18 and 2,931.01

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Solution

The fourth proportional to 5,168.97, 7,133.18 and 2,931.01 is: 4,044.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,168.97 : 7,133.18 = 2,931.01 : x
  2. Step 2: Convert to fraction form
    5,168.97/7,133.18 = 2,931.01/x
  3. Step 3: Cross multiply
    5,168.97x = 7,133.18 × 2,931.01
  4. Step 4: Simplify right side
    5,168.97x = 20,907,389.42
  5. Step 5: Solve for x
    x = 20,907,389.42/5,168.97
  6. Step 6: Final answer
    x = 4,044.79

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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.