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Finding the Fourth Proportional to 64,921.44, 97,372.38 and 20,542.42

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Solution

The fourth proportional to 64,921.44, 97,372.38 and 20,542.42 is: 30,810.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,921.44 : 97,372.38 = 20,542.42 : x
  2. Step 2: Convert to fraction form
    64,921.44/97,372.38 = 20,542.42/x
  3. Step 3: Cross multiply
    64,921.44x = 97,372.38 × 20,542.42
  4. Step 4: Simplify right side
    64,921.44x = 2,000,264,326.36
  5. Step 5: Solve for x
    x = 2,000,264,326.36/64,921.44
  6. Step 6: Final answer
    x = 30,810.54

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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.