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Finding the Fourth Proportional to 405,554.28, 608,324.72 and 121,245.49

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Solution

The fourth proportional to 405,554.28, 608,324.72 and 121,245.49 is: 181,866.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,554.28 : 608,324.72 = 121,245.49 : x
  2. Step 2: Convert to fraction form
    405,554.28/608,324.72 = 121,245.49/x
  3. Step 3: Cross multiply
    405,554.28x = 608,324.72 × 121,245.49
  4. Step 4: Simplify right side
    405,554.28x = 73,756,628,755.51
  5. Step 5: Solve for x
    x = 73,756,628,755.51/405,554.28
  6. Step 6: Final answer
    x = 181,866.23

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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.