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Finding the Fourth Proportional to 886,893.80, 1,328,809.80 and 412,606.40

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Solution

The fourth proportional to 886,893.80, 1,328,809.80 and 412,606.40 is: 618,197.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,893.80 : 1,328,809.80 = 412,606.40 : x
  2. Step 2: Convert to fraction form
    886,893.80/1,328,809.80 = 412,606.40/x
  3. Step 3: Cross multiply
    886,893.80x = 1,328,809.80 × 412,606.40
  4. Step 4: Simplify right side
    886,893.80x = 548,275,427,862.72
  5. Step 5: Solve for x
    x = 548,275,427,862.72/886,893.80
  6. Step 6: Final answer
    x = 618,197.38

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1.5x scale

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.