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Finding the Fourth Proportional to 111,129.63, 166,709.09 and 36,223.53

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Solution

The fourth proportional to 111,129.63, 166,709.09 and 36,223.53 is: 54,340.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,129.63 : 166,709.09 = 36,223.53 : x
  2. Step 2: Convert to fraction form
    111,129.63/166,709.09 = 36,223.53/x
  3. Step 3: Cross multiply
    111,129.63x = 166,709.09 × 36,223.53
  4. Step 4: Simplify right side
    111,129.63x = 6,038,791,722.89
  5. Step 5: Solve for x
    x = 6,038,791,722.89/111,129.63
  6. Step 6: Final answer
    x = 54,340.07

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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.