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Finding the Fourth Proportional to 694,181.07, 957,963.51 and 388,253.79

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Solution

The fourth proportional to 694,181.07, 957,963.51 and 388,253.79 is: 535,786.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,181.07 : 957,963.51 = 388,253.79 : x
  2. Step 2: Convert to fraction form
    694,181.07/957,963.51 = 388,253.79/x
  3. Step 3: Cross multiply
    694,181.07x = 957,963.51 × 388,253.79
  4. Step 4: Simplify right side
    694,181.07x = 371,932,963,439.20
  5. Step 5: Solve for x
    x = 371,932,963,439.20/694,181.07
  6. Step 6: Final answer
    x = 535,786.67

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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.