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Finding the Fourth Proportional to 620,198.96, 929,707.92 and 199,179.59

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Solution

The fourth proportional to 620,198.96, 929,707.92 and 199,179.59 is: 298,579.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,198.96 : 929,707.92 = 199,179.59 : x
  2. Step 2: Convert to fraction form
    620,198.96/929,707.92 = 199,179.59/x
  3. Step 3: Cross multiply
    620,198.96x = 929,707.92 × 199,179.59
  4. Step 4: Simplify right side
    620,198.96x = 185,178,837,676.81
  5. Step 5: Solve for x
    x = 185,178,837,676.81/620,198.96
  6. Step 6: Final answer
    x = 298,579.73

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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.