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Finding the Fourth Proportional to 343,682.36, 515,359.91 and 141,246.82

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Solution

The fourth proportional to 343,682.36, 515,359.91 and 141,246.82 is: 211,802.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,682.36 : 515,359.91 = 141,246.82 : x
  2. Step 2: Convert to fraction form
    343,682.36/515,359.91 = 141,246.82/x
  3. Step 3: Cross multiply
    343,682.36x = 515,359.91 × 141,246.82
  4. Step 4: Simplify right side
    343,682.36x = 72,792,947,507.70
  5. Step 5: Solve for x
    x = 72,792,947,507.70/343,682.36
  6. Step 6: Final answer
    x = 211,802.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.