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Finding the Fourth Proportional to 64,993.74, 89,690.67 and 36,697.74

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Solution

The fourth proportional to 64,993.74, 89,690.67 and 36,697.74 is: 50,642.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,993.74 : 89,690.67 = 36,697.74 : x
  2. Step 2: Convert to fraction form
    64,993.74/89,690.67 = 36,697.74/x
  3. Step 3: Cross multiply
    64,993.74x = 89,690.67 × 36,697.74
  4. Step 4: Simplify right side
    64,993.74x = 3,291,444,888.09
  5. Step 5: Solve for x
    x = 3,291,444,888.09/64,993.74
  6. Step 6: Final answer
    x = 50,642.49

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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.