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Finding the Fourth Proportional to 199,758.78, 275,198.04 and 139,219.38

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Solution

The fourth proportional to 199,758.78, 275,198.04 and 139,219.38 is: 191,795.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,758.78 : 275,198.04 = 139,219.38 : x
  2. Step 2: Convert to fraction form
    199,758.78/275,198.04 = 139,219.38/x
  3. Step 3: Cross multiply
    199,758.78x = 275,198.04 × 139,219.38
  4. Step 4: Simplify right side
    199,758.78x = 38,312,900,506.02
  5. Step 5: Solve for x
    x = 38,312,900,506.02/199,758.78
  6. Step 6: Final answer
    x = 191,795.83

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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.