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Finding the Fourth Proportional to 190,477.16, 262,863.78 and 105,597.80

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Solution

The fourth proportional to 190,477.16, 262,863.78 and 105,597.80 is: 145,727.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,477.16 : 262,863.78 = 105,597.80 : x
  2. Step 2: Convert to fraction form
    190,477.16/262,863.78 = 105,597.80/x
  3. Step 3: Cross multiply
    190,477.16x = 262,863.78 × 105,597.80
  4. Step 4: Simplify right side
    190,477.16x = 27,757,836,867.68
  5. Step 5: Solve for x
    x = 27,757,836,867.68/190,477.16
  6. Step 6: Final answer
    x = 145,727.90

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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.