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Finding the Fourth Proportional to 5,342.76, 7,374.02 and 3,218.44

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Solution

The fourth proportional to 5,342.76, 7,374.02 and 3,218.44 is: 4,442.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,342.76 : 7,374.02 = 3,218.44 : x
  2. Step 2: Convert to fraction form
    5,342.76/7,374.02 = 3,218.44/x
  3. Step 3: Cross multiply
    5,342.76x = 7,374.02 × 3,218.44
  4. Step 4: Simplify right side
    5,342.76x = 23,732,840.93
  5. Step 5: Solve for x
    x = 23,732,840.93/5,342.76
  6. Step 6: Final answer
    x = 4,442.06

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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.