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Finding the Fourth Proportional to 72,558.45, 108,721.04 and 60,894.45

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Solution

The fourth proportional to 72,558.45, 108,721.04 and 60,894.45 is: 91,243.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,558.45 : 108,721.04 = 60,894.45 : x
  2. Step 2: Convert to fraction form
    72,558.45/108,721.04 = 60,894.45/x
  3. Step 3: Cross multiply
    72,558.45x = 108,721.04 × 60,894.45
  4. Step 4: Simplify right side
    72,558.45x = 6,620,507,629.76
  5. Step 5: Solve for x
    x = 6,620,507,629.76/72,558.45
  6. Step 6: Final answer
    x = 91,243.79

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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.