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Finding the Fourth Proportional to 190,487.70, 285,639.21 and 57,343.14

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Solution

The fourth proportional to 190,487.70, 285,639.21 and 57,343.14 is: 85,986.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,487.70 : 285,639.21 = 57,343.14 : x
  2. Step 2: Convert to fraction form
    190,487.70/285,639.21 = 57,343.14/x
  3. Step 3: Cross multiply
    190,487.70x = 285,639.21 × 57,343.14
  4. Step 4: Simplify right side
    190,487.70x = 16,379,449,208.52
  5. Step 5: Solve for x
    x = 16,379,449,208.52/190,487.70
  6. Step 6: Final answer
    x = 85,986.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.