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Finding the Fourth Proportional to 72,249.03, 108,373.70 and 38,984.76

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Solution

The fourth proportional to 72,249.03, 108,373.70 and 38,984.76 is: 58,477.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,249.03 : 108,373.70 = 38,984.76 : x
  2. Step 2: Convert to fraction form
    72,249.03/108,373.70 = 38,984.76/x
  3. Step 3: Cross multiply
    72,249.03x = 108,373.70 × 38,984.76
  4. Step 4: Simplify right side
    72,249.03x = 4,224,922,782.27
  5. Step 5: Solve for x
    x = 4,224,922,782.27/72,249.03
  6. Step 6: Final answer
    x = 58,477.22

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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.