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Finding the Fourth Proportional to 404,390.67, 558,055.28 and 223,104.07

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Solution

The fourth proportional to 404,390.67, 558,055.28 and 223,104.07 is: 307,881.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,390.67 : 558,055.28 = 223,104.07 : x
  2. Step 2: Convert to fraction form
    404,390.67/558,055.28 = 223,104.07/x
  3. Step 3: Cross multiply
    404,390.67x = 558,055.28 × 223,104.07
  4. Step 4: Simplify right side
    404,390.67x = 124,504,401,462.71
  5. Step 5: Solve for x
    x = 124,504,401,462.71/404,390.67
  6. Step 6: Final answer
    x = 307,881.49

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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.