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Finding the Fourth Proportional to 190,314.59, 262,614.99 and 105,415.79

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Solution

The fourth proportional to 190,314.59, 262,614.99 and 105,415.79 is: 145,463.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,314.59 : 262,614.99 = 105,415.79 : x
  2. Step 2: Convert to fraction form
    190,314.59/262,614.99 = 105,415.79/x
  3. Step 3: Cross multiply
    190,314.59x = 262,614.99 × 105,415.79
  4. Step 4: Simplify right side
    190,314.59x = 27,683,764,796.54
  5. Step 5: Solve for x
    x = 27,683,764,796.54/190,314.59
  6. Step 6: Final answer
    x = 145,463.18

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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.