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Finding the Fourth Proportional to 618,788.78, 853,876.34 and 343,154.54

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Solution

The fourth proportional to 618,788.78, 853,876.34 and 343,154.54 is: 473,524.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,788.78 : 853,876.34 = 343,154.54 : x
  2. Step 2: Convert to fraction form
    618,788.78/853,876.34 = 343,154.54/x
  3. Step 3: Cross multiply
    618,788.78x = 853,876.34 × 343,154.54
  4. Step 4: Simplify right side
    618,788.78x = 293,011,542,669.58
  5. Step 5: Solve for x
    x = 293,011,542,669.58/618,788.78
  6. Step 6: Final answer
    x = 473,524.33

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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.