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Finding the Fourth Proportional to 2,697.76, 3,721 and 2,607.44

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Solution

The fourth proportional to 2,697.76, 3,721 and 2,607.44 is: 3,596.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,697.76 : 3,721 = 2,607.44 : x
  2. Step 2: Convert to fraction form
    2,697.76/3,721 = 2,607.44/x
  3. Step 3: Cross multiply
    2,697.76x = 3,721 × 2,607.44
  4. Step 4: Simplify right side
    2,697.76x = 9,702,284.24
  5. Step 5: Solve for x
    x = 9,702,284.24/2,697.76
  6. Step 6: Final answer
    x = 3,596.42

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1.5x scale

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.