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Finding the Fourth Proportional to 190,406, 262,760.28 and 105,528.54

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Solution

The fourth proportional to 190,406, 262,760.28 and 105,528.54 is: 145,629.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,406 : 262,760.28 = 105,528.54 : x
  2. Step 2: Convert to fraction form
    190,406/262,760.28 = 105,528.54/x
  3. Step 3: Cross multiply
    190,406x = 262,760.28 × 105,528.54
  4. Step 4: Simplify right side
    190,406x = 27,728,708,718.39
  5. Step 5: Solve for x
    x = 27,728,708,718.39/190,406
  6. Step 6: Final answer
    x = 145,629.39

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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.