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Finding the Fourth Proportional to 207,969.98, 311,920.68 and 74,825.42

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Solution

The fourth proportional to 207,969.98, 311,920.68 and 74,825.42 is: 112,225.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,969.98 : 311,920.68 = 74,825.42 : x
  2. Step 2: Convert to fraction form
    207,969.98/311,920.68 = 74,825.42/x
  3. Step 3: Cross multiply
    207,969.98x = 311,920.68 × 74,825.42
  4. Step 4: Simplify right side
    207,969.98x = 23,339,595,887.69
  5. Step 5: Solve for x
    x = 23,339,595,887.69/207,969.98
  6. Step 6: Final answer
    x = 112,225.79

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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.