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Finding the Fourth Proportional to 404,389.92, 558,060 and 223,104

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Solution

The fourth proportional to 404,389.92, 558,060 and 223,104 is: 307,884.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,389.92 : 558,060 = 223,104 : x
  2. Step 2: Convert to fraction form
    404,389.92/558,060 = 223,104/x
  3. Step 3: Cross multiply
    404,389.92x = 558,060 × 223,104
  4. Step 4: Simplify right side
    404,389.92x = 124,505,418,240
  5. Step 5: Solve for x
    x = 124,505,418,240/404,389.92
  6. Step 6: Final answer
    x = 307,884.57

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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.