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Finding the Fourth Proportional to 188,846.19, 260,642.70 and 108,274.28

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Solution

The fourth proportional to 188,846.19, 260,642.70 and 108,274.28 is: 149,438.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,846.19 : 260,642.70 = 108,274.28 : x
  2. Step 2: Convert to fraction form
    188,846.19/260,642.70 = 108,274.28/x
  3. Step 3: Cross multiply
    188,846.19x = 260,642.70 × 108,274.28
  4. Step 4: Simplify right side
    188,846.19x = 28,220,899,376.54
  5. Step 5: Solve for x
    x = 28,220,899,376.54/188,846.19
  6. Step 6: Final answer
    x = 149,438.54

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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.