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Finding the Fourth Proportional to 322,969.33, 445,678.59 and 186,993.55

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Solution

The fourth proportional to 322,969.33, 445,678.59 and 186,993.55 is: 258,040.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,969.33 : 445,678.59 = 186,993.55 : x
  2. Step 2: Convert to fraction form
    322,969.33/445,678.59 = 186,993.55/x
  3. Step 3: Cross multiply
    322,969.33x = 445,678.59 × 186,993.55
  4. Step 4: Simplify right side
    322,969.33x = 83,339,021,703.09
  5. Step 5: Solve for x
    x = 83,339,021,703.09/322,969.33
  6. Step 6: Final answer
    x = 258,040.05

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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.