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Finding the Fourth Proportional to 705,668.58, 973,608.06 and 399,696.33

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Solution

The fourth proportional to 705,668.58, 973,608.06 and 399,696.33 is: 551,459.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,668.58 : 973,608.06 = 399,696.33 : x
  2. Step 2: Convert to fraction form
    705,668.58/973,608.06 = 399,696.33/x
  3. Step 3: Cross multiply
    705,668.58x = 973,608.06 × 399,696.33
  4. Step 4: Simplify right side
    705,668.58x = 389,147,568,440.42
  5. Step 5: Solve for x
    x = 389,147,568,440.42/705,668.58
  6. Step 6: Final answer
    x = 551,459.40

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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.