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Finding the Fourth Proportional to 64,958.99, 89,642.72 and 36,665.87

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Solution

The fourth proportional to 64,958.99, 89,642.72 and 36,665.87 is: 50,598.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,958.99 : 89,642.72 = 36,665.87 : x
  2. Step 2: Convert to fraction form
    64,958.99/89,642.72 = 36,665.87/x
  3. Step 3: Cross multiply
    64,958.99x = 89,642.72 × 36,665.87
  4. Step 4: Simplify right side
    64,958.99x = 3,286,827,961.42
  5. Step 5: Solve for x
    x = 3,286,827,961.42/64,958.99
  6. Step 6: Final answer
    x = 50,598.51

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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.