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Finding the Fourth Proportional to 368,579.13, 508,796.15 and 247,790.48

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Solution

The fourth proportional to 368,579.13, 508,796.15 and 247,790.48 is: 342,056.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,579.13 : 508,796.15 = 247,790.48 : x
  2. Step 2: Convert to fraction form
    368,579.13/508,796.15 = 247,790.48/x
  3. Step 3: Cross multiply
    368,579.13x = 508,796.15 × 247,790.48
  4. Step 4: Simplify right side
    368,579.13x = 126,074,842,042.75
  5. Step 5: Solve for x
    x = 126,074,842,042.75/368,579.13
  6. Step 6: Final answer
    x = 342,056.37

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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.