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Finding the Fourth Proportional to 190,405.82, 262,768.89 and 105,522.89

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Solution

The fourth proportional to 190,405.82, 262,768.89 and 105,522.89 is: 145,626.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,405.82 : 262,768.89 = 105,522.89 : x
  2. Step 2: Convert to fraction form
    190,405.82/262,768.89 = 105,522.89/x
  3. Step 3: Cross multiply
    190,405.82x = 262,768.89 × 105,522.89
  4. Step 4: Simplify right side
    190,405.82x = 27,728,132,674.89
  5. Step 5: Solve for x
    x = 27,728,132,674.89/190,405.82
  6. Step 6: Final answer
    x = 145,626.50

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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.