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Finding the Fourth Proportional to 190,790, 263,277.02 and 105,900.38

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Solution

The fourth proportional to 190,790, 263,277.02 and 105,900.38 is: 146,135.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,790 : 263,277.02 = 105,900.38 : x
  2. Step 2: Convert to fraction form
    190,790/263,277.02 = 105,900.38/x
  3. Step 3: Cross multiply
    190,790x = 263,277.02 × 105,900.38
  4. Step 4: Simplify right side
    190,790x = 27,881,136,463.27
  5. Step 5: Solve for x
    x = 27,881,136,463.27/190,790
  6. Step 6: Final answer
    x = 146,135.21

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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.