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Finding the Fourth Proportional to 5,276.64, 7,917.67 and 2,356.86

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Solution

The fourth proportional to 5,276.64, 7,917.67 and 2,356.86 is: 3,536.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,276.64 : 7,917.67 = 2,356.86 : x
  2. Step 2: Convert to fraction form
    5,276.64/7,917.67 = 2,356.86/x
  3. Step 3: Cross multiply
    5,276.64x = 7,917.67 × 2,356.86
  4. Step 4: Simplify right side
    5,276.64x = 18,660,839.72
  5. Step 5: Solve for x
    x = 18,660,839.72/5,276.64
  6. Step 6: Final answer
    x = 3,536.50

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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.