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Finding the Fourth Proportional to 36,831.70, 55,245.12 and 15,771.70

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Solution

The fourth proportional to 36,831.70, 55,245.12 and 15,771.70 is: 23,656.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,831.70 : 55,245.12 = 15,771.70 : x
  2. Step 2: Convert to fraction form
    36,831.70/55,245.12 = 15,771.70/x
  3. Step 3: Cross multiply
    36,831.70x = 55,245.12 × 15,771.70
  4. Step 4: Simplify right side
    36,831.70x = 871,309,459.10
  5. Step 5: Solve for x
    x = 871,309,459.10/36,831.70
  6. Step 6: Final answer
    x = 23,656.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.