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Finding the Fourth Proportional to 511,124.75, 705,356.98 and 281,690.43

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Solution

The fourth proportional to 511,124.75, 705,356.98 and 281,690.43 is: 388,735.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,124.75 : 705,356.98 = 281,690.43 : x
  2. Step 2: Convert to fraction form
    511,124.75/705,356.98 = 281,690.43/x
  3. Step 3: Cross multiply
    511,124.75x = 705,356.98 × 281,690.43
  4. Step 4: Simplify right side
    511,124.75x = 198,692,307,650.39
  5. Step 5: Solve for x
    x = 198,692,307,650.39/511,124.75
  6. Step 6: Final answer
    x = 388,735.45

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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.