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Finding the Fourth Proportional to 5,158.53, 7,738.40 and 2,967.28

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Solution

The fourth proportional to 5,158.53, 7,738.40 and 2,967.28 is: 4,451.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,158.53 : 7,738.40 = 2,967.28 : x
  2. Step 2: Convert to fraction form
    5,158.53/7,738.40 = 2,967.28/x
  3. Step 3: Cross multiply
    5,158.53x = 7,738.40 × 2,967.28
  4. Step 4: Simplify right side
    5,158.53x = 22,961,999.55
  5. Step 5: Solve for x
    x = 22,961,999.55/5,158.53
  6. Step 6: Final answer
    x = 4,451.27

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1.5x scale

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.