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Finding the Fourth Proportional to 193,362.12, 289,986.89 and 66,997.26

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Solution

The fourth proportional to 193,362.12, 289,986.89 and 66,997.26 is: 100,476.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,362.12 : 289,986.89 = 66,997.26 : x
  2. Step 2: Convert to fraction form
    193,362.12/289,986.89 = 66,997.26/x
  3. Step 3: Cross multiply
    193,362.12x = 289,986.89 × 66,997.26
  4. Step 4: Simplify right side
    193,362.12x = 19,428,326,730.94
  5. Step 5: Solve for x
    x = 19,428,326,730.94/193,362.12
  6. Step 6: Final answer
    x = 100,476.38

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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.