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Finding the Fourth Proportional to 2,437.78, 3,656.46 and 682.64

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Solution

The fourth proportional to 2,437.78, 3,656.46 and 682.64 is: 1,023.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,437.78 : 3,656.46 = 682.64 : x
  2. Step 2: Convert to fraction form
    2,437.78/3,656.46 = 682.64/x
  3. Step 3: Cross multiply
    2,437.78x = 3,656.46 × 682.64
  4. Step 4: Simplify right side
    2,437.78x = 2,496,045.85
  5. Step 5: Solve for x
    x = 2,496,045.85/2,437.78
  6. Step 6: Final answer
    x = 1,023.90

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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.