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Finding the Fourth Proportional to 64,965.87, 89,652.92 and 35,157.87

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Solution

The fourth proportional to 64,965.87, 89,652.92 and 35,157.87 is: 48,517.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,965.87 : 89,652.92 = 35,157.87 : x
  2. Step 2: Convert to fraction form
    64,965.87/89,652.92 = 35,157.87/x
  3. Step 3: Cross multiply
    64,965.87x = 89,652.92 × 35,157.87
  4. Step 4: Simplify right side
    64,965.87x = 3,152,005,530.69
  5. Step 5: Solve for x
    x = 3,152,005,530.69/64,965.87
  6. Step 6: Final answer
    x = 48,517.87

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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.