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Finding the Fourth Proportional to 190,607.91, 263,037.02 and 105,722.79

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Solution

The fourth proportional to 190,607.91, 263,037.02 and 105,722.79 is: 145,896.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,607.91 : 263,037.02 = 105,722.79 : x
  2. Step 2: Convert to fraction form
    190,607.91/263,037.02 = 105,722.79/x
  3. Step 3: Cross multiply
    190,607.91x = 263,037.02 × 105,722.79
  4. Step 4: Simplify right side
    190,607.91x = 27,809,007,099.07
  5. Step 5: Solve for x
    x = 27,809,007,099.07/190,607.91
  6. Step 6: Final answer
    x = 145,896.40

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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.