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Finding the Fourth Proportional to 117,960.80, 177,017.31 and 43,074.67

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Solution

The fourth proportional to 117,960.80, 177,017.31 and 43,074.67 is: 64,639.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,960.80 : 177,017.31 = 43,074.67 : x
  2. Step 2: Convert to fraction form
    117,960.80/177,017.31 = 43,074.67/x
  3. Step 3: Cross multiply
    117,960.80x = 177,017.31 × 43,074.67
  4. Step 4: Simplify right side
    117,960.80x = 7,624,961,769.99
  5. Step 5: Solve for x
    x = 7,624,961,769.99/117,960.80
  6. Step 6: Final answer
    x = 64,639.80

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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.