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Finding the Fourth Proportional to 65,912.45, 90,958.73 and 35,697.11

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Solution

The fourth proportional to 65,912.45, 90,958.73 and 35,697.11 is: 49,261.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,912.45 : 90,958.73 = 35,697.11 : x
  2. Step 2: Convert to fraction form
    65,912.45/90,958.73 = 35,697.11/x
  3. Step 3: Cross multiply
    65,912.45x = 90,958.73 × 35,697.11
  4. Step 4: Simplify right side
    65,912.45x = 3,246,963,156.99
  5. Step 5: Solve for x
    x = 3,246,963,156.99/65,912.45
  6. Step 6: Final answer
    x = 49,261.76

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1.5x scale

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.