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Finding the Fourth Proportional to 320,021.78, 441,683.97 and 185,963.54

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Solution

The fourth proportional to 320,021.78, 441,683.97 and 185,963.54 is: 256,661.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,021.78 : 441,683.97 = 185,963.54 : x
  2. Step 2: Convert to fraction form
    320,021.78/441,683.97 = 185,963.54/x
  3. Step 3: Cross multiply
    320,021.78x = 441,683.97 × 185,963.54
  4. Step 4: Simplify right side
    320,021.78x = 82,137,114,622.45
  5. Step 5: Solve for x
    x = 82,137,114,622.45/320,021.78
  6. Step 6: Final answer
    x = 256,661.01

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1.5x scale

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.