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Finding the Fourth Proportional to 515,668.78, 773,544.51 and 195,973.80

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Solution

The fourth proportional to 515,668.78, 773,544.51 and 195,973.80 is: 293,976.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,668.78 : 773,544.51 = 195,973.80 : x
  2. Step 2: Convert to fraction form
    515,668.78/773,544.51 = 195,973.80/x
  3. Step 3: Cross multiply
    515,668.78x = 773,544.51 × 195,973.80
  4. Step 4: Simplify right side
    515,668.78x = 151,594,457,093.84
  5. Step 5: Solve for x
    x = 151,594,457,093.84/515,668.78
  6. Step 6: Final answer
    x = 293,976.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.