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Finding the Fourth Proportional to 190,443.60, 285,738.30 and 187,454.70

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Solution

The fourth proportional to 190,443.60, 285,738.30 and 187,454.70 is: 281,253.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,443.60 : 285,738.30 = 187,454.70 : x
  2. Step 2: Convert to fraction form
    190,443.60/285,738.30 = 187,454.70/x
  3. Step 3: Cross multiply
    190,443.60x = 285,738.30 × 187,454.70
  4. Step 4: Simplify right side
    190,443.60x = 53,562,987,305.01
  5. Step 5: Solve for x
    x = 53,562,987,305.01/190,443.60
  6. Step 6: Final answer
    x = 281,253.81

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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.