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Finding the Fourth Proportional to 326,155.98, 450,144.45 and 198,905.39

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Solution

The fourth proportional to 326,155.98, 450,144.45 and 198,905.39 is: 274,519.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,155.98 : 450,144.45 = 198,905.39 : x
  2. Step 2: Convert to fraction form
    326,155.98/450,144.45 = 198,905.39/x
  3. Step 3: Cross multiply
    326,155.98x = 450,144.45 × 198,905.39
  4. Step 4: Simplify right side
    326,155.98x = 89,536,157,383.59
  5. Step 5: Solve for x
    x = 89,536,157,383.59/326,155.98
  6. Step 6: Final answer
    x = 274,519.44

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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.