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Finding the Fourth Proportional to 620,199.94, 929,709.40 and 199,180.58

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Solution

The fourth proportional to 620,199.94, 929,709.40 and 199,180.58 is: 298,581.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,199.94 : 929,709.40 = 199,180.58 : x
  2. Step 2: Convert to fraction form
    620,199.94/929,709.40 = 199,180.58/x
  3. Step 3: Cross multiply
    620,199.94x = 929,709.40 × 199,180.58
  4. Step 4: Simplify right side
    620,199.94x = 185,180,057,523.45
  5. Step 5: Solve for x
    x = 185,180,057,523.45/620,199.94
  6. Step 6: Final answer
    x = 298,581.22

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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.