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Finding the Fourth Proportional to 3,308.36, 4,962.40 and 843.24

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Solution

The fourth proportional to 3,308.36, 4,962.40 and 843.24 is: 1,264.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,308.36 : 4,962.40 = 843.24 : x
  2. Step 2: Convert to fraction form
    3,308.36/4,962.40 = 843.24/x
  3. Step 3: Cross multiply
    3,308.36x = 4,962.40 × 843.24
  4. Step 4: Simplify right side
    3,308.36x = 4,184,465.15
  5. Step 5: Solve for x
    x = 4,184,465.15/3,308.36
  6. Step 6: Final answer
    x = 1,264.82

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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.