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Finding the Fourth Proportional to 351,872.92, 485,585.67 and 190,728.61

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Solution

The fourth proportional to 351,872.92, 485,585.67 and 190,728.61 is: 263,206.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,872.92 : 485,585.67 = 190,728.61 : x
  2. Step 2: Convert to fraction form
    351,872.92/485,585.67 = 190,728.61/x
  3. Step 3: Cross multiply
    351,872.92x = 485,585.67 × 190,728.61
  4. Step 4: Simplify right side
    351,872.92x = 92,615,079,875.02
  5. Step 5: Solve for x
    x = 92,615,079,875.02/351,872.92
  6. Step 6: Final answer
    x = 263,206.05

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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.