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Finding the Fourth Proportional to 2,064.78, 3,090.24 and 1,447.02

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Solution

The fourth proportional to 2,064.78, 3,090.24 and 1,447.02 is: 2,165.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,064.78 : 3,090.24 = 1,447.02 : x
  2. Step 2: Convert to fraction form
    2,064.78/3,090.24 = 1,447.02/x
  3. Step 3: Cross multiply
    2,064.78x = 3,090.24 × 1,447.02
  4. Step 4: Simplify right side
    2,064.78x = 4,471,639.08
  5. Step 5: Solve for x
    x = 4,471,639.08/2,064.78
  6. Step 6: Final answer
    x = 2,165.67

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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.