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Finding the Fourth Proportional to 722,093.16, 996,519.69 and 399,803.25

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Solution

The fourth proportional to 722,093.16, 996,519.69 and 399,803.25 is: 551,745.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,093.16 : 996,519.69 = 399,803.25 : x
  2. Step 2: Convert to fraction form
    722,093.16/996,519.69 = 399,803.25/x
  3. Step 3: Cross multiply
    722,093.16x = 996,519.69 × 399,803.25
  4. Step 4: Simplify right side
    722,093.16x = 398,411,805,768.39
  5. Step 5: Solve for x
    x = 398,411,805,768.39/722,093.16
  6. Step 6: Final answer
    x = 551,745.72

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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.