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Finding the Fourth Proportional to 36,505.35, 54,758.03 and 12,831.48

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Solution

The fourth proportional to 36,505.35, 54,758.03 and 12,831.48 is: 19,247.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,505.35 : 54,758.03 = 12,831.48 : x
  2. Step 2: Convert to fraction form
    36,505.35/54,758.03 = 12,831.48/x
  3. Step 3: Cross multiply
    36,505.35x = 54,758.03 × 12,831.48
  4. Step 4: Simplify right side
    36,505.35x = 702,626,566.78
  5. Step 5: Solve for x
    x = 702,626,566.78/36,505.35
  6. Step 6: Final answer
    x = 19,247.22

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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.