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Finding the Fourth Proportional to 65,230.39, 90,019.77 and 36,936.07

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Solution

The fourth proportional to 65,230.39, 90,019.77 and 36,936.07 is: 50,972.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,230.39 : 90,019.77 = 36,936.07 : x
  2. Step 2: Convert to fraction form
    65,230.39/90,019.77 = 36,936.07/x
  3. Step 3: Cross multiply
    65,230.39x = 90,019.77 × 36,936.07
  4. Step 4: Simplify right side
    65,230.39x = 3,324,976,526.10
  5. Step 5: Solve for x
    x = 3,324,976,526.10/65,230.39
  6. Step 6: Final answer
    x = 50,972.81

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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.