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Finding the Fourth Proportional to 64,994.28, 89,690.58 and 36,699.24

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Solution

The fourth proportional to 64,994.28, 89,690.58 and 36,699.24 is: 50,644.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,994.28 : 89,690.58 = 36,699.24 : x
  2. Step 2: Convert to fraction form
    64,994.28/89,690.58 = 36,699.24/x
  3. Step 3: Cross multiply
    64,994.28x = 89,690.58 × 36,699.24
  4. Step 4: Simplify right side
    64,994.28x = 3,291,576,121.16
  5. Step 5: Solve for x
    x = 3,291,576,121.16/64,994.28
  6. Step 6: Final answer
    x = 50,644.09

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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.