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Finding the Fourth Proportional to 401,051.25, 553,450.73 and 222,203.25

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Solution

The fourth proportional to 401,051.25, 553,450.73 and 222,203.25 is: 306,640.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,051.25 : 553,450.73 = 222,203.25 : x
  2. Step 2: Convert to fraction form
    401,051.25/553,450.73 = 222,203.25/x
  3. Step 3: Cross multiply
    401,051.25x = 553,450.73 × 222,203.25
  4. Step 4: Simplify right side
    401,051.25x = 122,978,549,809.86
  5. Step 5: Solve for x
    x = 122,978,549,809.86/401,051.25
  6. Step 6: Final answer
    x = 306,640.49

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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.