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Finding the Fourth Proportional to 188,969.70, 260,778.90 and 104,086.56

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Solution

The fourth proportional to 188,969.70, 260,778.90 and 104,086.56 is: 143,639.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,969.70 : 260,778.90 = 104,086.56 : x
  2. Step 2: Convert to fraction form
    188,969.70/260,778.90 = 104,086.56/x
  3. Step 3: Cross multiply
    188,969.70x = 260,778.90 × 104,086.56
  4. Step 4: Simplify right side
    188,969.70x = 27,143,578,621.58
  5. Step 5: Solve for x
    x = 27,143,578,621.58/188,969.70
  6. Step 6: Final answer
    x = 143,639.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.