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Finding the Fourth Proportional to 199,403.78, 298,993.52 and 66,212.76

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Solution

The fourth proportional to 199,403.78, 298,993.52 and 66,212.76 is: 99,281.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,403.78 : 298,993.52 = 66,212.76 : x
  2. Step 2: Convert to fraction form
    199,403.78/298,993.52 = 66,212.76/x
  3. Step 3: Cross multiply
    199,403.78x = 298,993.52 × 66,212.76
  4. Step 4: Simplify right side
    199,403.78x = 19,797,186,181.32
  5. Step 5: Solve for x
    x = 19,797,186,181.32/199,403.78
  6. Step 6: Final answer
    x = 99,281.90

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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.