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Finding the Fourth Proportional to 406,663.22, 561,194.52 and 222,901.68

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Solution

The fourth proportional to 406,663.22, 561,194.52 and 222,901.68 is: 307,603.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,663.22 : 561,194.52 = 222,901.68 : x
  2. Step 2: Convert to fraction form
    406,663.22/561,194.52 = 222,901.68/x
  3. Step 3: Cross multiply
    406,663.22x = 561,194.52 × 222,901.68
  4. Step 4: Simplify right side
    406,663.22x = 125,091,201,314.79
  5. Step 5: Solve for x
    x = 125,091,201,314.79/406,663.22
  6. Step 6: Final answer
    x = 307,603.92

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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.