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Finding the Fourth Proportional to 368,574.98, 508,790.40 and 247,786.31

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Solution

The fourth proportional to 368,574.98, 508,790.40 and 247,786.31 is: 342,050.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,574.98 : 508,790.40 = 247,786.31 : x
  2. Step 2: Convert to fraction form
    368,574.98/508,790.40 = 247,786.31/x
  3. Step 3: Cross multiply
    368,574.98x = 508,790.40 × 247,786.31
  4. Step 4: Simplify right side
    368,574.98x = 126,071,296,122.20
  5. Step 5: Solve for x
    x = 126,071,296,122.20/368,574.98
  6. Step 6: Final answer
    x = 342,050.61

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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.