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Finding the Fourth Proportional to 2,415.68, 3,333.37 and 1,353.30

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Solution

The fourth proportional to 2,415.68, 3,333.37 and 1,353.30 is: 1,867.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,415.68 : 3,333.37 = 1,353.30 : x
  2. Step 2: Convert to fraction form
    2,415.68/3,333.37 = 1,353.30/x
  3. Step 3: Cross multiply
    2,415.68x = 3,333.37 × 1,353.30
  4. Step 4: Simplify right side
    2,415.68x = 4,511,042.85
  5. Step 5: Solve for x
    x = 4,511,042.85/2,415.68
  6. Step 6: Final answer
    x = 1,867.40

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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.