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Finding the Fourth Proportional to 653,986.80, 981,012.60 and 339,058.80

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Solution

The fourth proportional to 653,986.80, 981,012.60 and 339,058.80 is: 508,605.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,986.80 : 981,012.60 = 339,058.80 : x
  2. Step 2: Convert to fraction form
    653,986.80/981,012.60 = 339,058.80/x
  3. Step 3: Cross multiply
    653,986.80x = 981,012.60 × 339,058.80
  4. Step 4: Simplify right side
    653,986.80x = 332,620,954,940.88
  5. Step 5: Solve for x
    x = 332,620,954,940.88/653,986.80
  6. Step 6: Final answer
    x = 508,605.00

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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.