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Finding the Fourth Proportional to 64,489.64, 88,993.99 and 35,808.56

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Solution

The fourth proportional to 64,489.64, 88,993.99 and 35,808.56 is: 49,414.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,489.64 : 88,993.99 = 35,808.56 : x
  2. Step 2: Convert to fraction form
    64,489.64/88,993.99 = 35,808.56/x
  3. Step 3: Cross multiply
    64,489.64x = 88,993.99 × 35,808.56
  4. Step 4: Simplify right side
    64,489.64x = 3,186,746,313.78
  5. Step 5: Solve for x
    x = 3,186,746,313.78/64,489.64
  6. Step 6: Final answer
    x = 49,414.85

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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.