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Finding the Fourth Proportional to 190,381.86, 262,755 and 109,793.70

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Solution

The fourth proportional to 190,381.86, 262,755 and 109,793.70 is: 151,531.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,381.86 : 262,755 = 109,793.70 : x
  2. Step 2: Convert to fraction form
    190,381.86/262,755 = 109,793.70/x
  3. Step 3: Cross multiply
    190,381.86x = 262,755 × 109,793.70
  4. Step 4: Simplify right side
    190,381.86x = 28,848,843,643.50
  5. Step 5: Solve for x
    x = 28,848,843,643.50/190,381.86
  6. Step 6: Final answer
    x = 151,531.47

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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.