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Finding the Fourth Proportional to 64,676.88, 89,239.32 and 36,372.24

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Solution

The fourth proportional to 64,676.88, 89,239.32 and 36,372.24 is: 50,185.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,676.88 : 89,239.32 = 36,372.24 : x
  2. Step 2: Convert to fraction form
    64,676.88/89,239.32 = 36,372.24/x
  3. Step 3: Cross multiply
    64,676.88x = 89,239.32 × 36,372.24
  4. Step 4: Simplify right side
    64,676.88x = 3,245,833,964.48
  5. Step 5: Solve for x
    x = 3,245,833,964.48/64,676.88
  6. Step 6: Final answer
    x = 50,185.38

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1.5x scale

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.