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Finding the Fourth Proportional to 72,994.44, 109,441.08 and 28,625.67

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Solution

The fourth proportional to 72,994.44, 109,441.08 and 28,625.67 is: 42,918.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,994.44 : 109,441.08 = 28,625.67 : x
  2. Step 2: Convert to fraction form
    72,994.44/109,441.08 = 28,625.67/x
  3. Step 3: Cross multiply
    72,994.44x = 109,441.08 × 28,625.67
  4. Step 4: Simplify right side
    72,994.44x = 3,132,824,240.52
  5. Step 5: Solve for x
    x = 3,132,824,240.52/72,994.44
  6. Step 6: Final answer
    x = 42,918.67

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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.