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Finding the Fourth Proportional to 558,362.61, 770,509.23 and 313,324.59

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Solution

The fourth proportional to 558,362.61, 770,509.23 and 313,324.59 is: 432,370.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,362.61 : 770,509.23 = 313,324.59 : x
  2. Step 2: Convert to fraction form
    558,362.61/770,509.23 = 313,324.59/x
  3. Step 3: Cross multiply
    558,362.61x = 770,509.23 × 313,324.59
  4. Step 4: Simplify right side
    558,362.61x = 241,419,488,580.97
  5. Step 5: Solve for x
    x = 241,419,488,580.97/558,362.61
  6. Step 6: Final answer
    x = 432,370.44

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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.