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Finding the Fourth Proportional to 190,432.68, 262,786.82 and 105,544.68

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Solution

The fourth proportional to 190,432.68, 262,786.82 and 105,544.68 is: 145,645.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,432.68 : 262,786.82 = 105,544.68 : x
  2. Step 2: Convert to fraction form
    190,432.68/262,786.82 = 105,544.68/x
  3. Step 3: Cross multiply
    190,432.68x = 262,786.82 × 105,544.68
  4. Step 4: Simplify right side
    190,432.68x = 27,735,750,825.12
  5. Step 5: Solve for x
    x = 27,735,750,825.12/190,432.68
  6. Step 6: Final answer
    x = 145,645.96

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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.