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Finding the Fourth Proportional to 373,649.44, 515,639.28 and 203,886.40

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Solution

The fourth proportional to 373,649.44, 515,639.28 and 203,886.40 is: 281,364.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,649.44 : 515,639.28 = 203,886.40 : x
  2. Step 2: Convert to fraction form
    373,649.44/515,639.28 = 203,886.40/x
  3. Step 3: Cross multiply
    373,649.44x = 515,639.28 × 203,886.40
  4. Step 4: Simplify right side
    373,649.44x = 105,131,836,497.79
  5. Step 5: Solve for x
    x = 105,131,836,497.79/373,649.44
  6. Step 6: Final answer
    x = 281,364.90

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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.