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Finding the Fourth Proportional to 190,287, 262,596.06 and 105,409.56

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Solution

The fourth proportional to 190,287, 262,596.06 and 105,409.56 is: 145,465.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,287 : 262,596.06 = 105,409.56 : x
  2. Step 2: Convert to fraction form
    190,287/262,596.06 = 105,409.56/x
  3. Step 3: Cross multiply
    190,287x = 262,596.06 × 105,409.56
  4. Step 4: Simplify right side
    190,287x = 27,680,135,142.33
  5. Step 5: Solve for x
    x = 27,680,135,142.33/190,287
  6. Step 6: Final answer
    x = 145,465.19

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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.