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Finding the Fourth Proportional to 438,910.94, 605,746.40 and 247,936.64

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Solution

The fourth proportional to 438,910.94, 605,746.40 and 247,936.64 is: 342,180.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,910.94 : 605,746.40 = 247,936.64 : x
  2. Step 2: Convert to fraction form
    438,910.94/605,746.40 = 247,936.64/x
  3. Step 3: Cross multiply
    438,910.94x = 605,746.40 × 247,936.64
  4. Step 4: Simplify right side
    438,910.94x = 150,186,727,108.10
  5. Step 5: Solve for x
    x = 150,186,727,108.10/438,910.94
  6. Step 6: Final answer
    x = 342,180.41

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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.