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Finding the Fourth Proportional to 339,078.18, 467,918.64 and 186,116.16

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Solution

The fourth proportional to 339,078.18, 467,918.64 and 186,116.16 is: 256,835.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,078.18 : 467,918.64 = 186,116.16 : x
  2. Step 2: Convert to fraction form
    339,078.18/467,918.64 = 186,116.16/x
  3. Step 3: Cross multiply
    339,078.18x = 467,918.64 × 186,116.16
  4. Step 4: Simplify right side
    339,078.18x = 87,087,220,469.22
  5. Step 5: Solve for x
    x = 87,087,220,469.22/339,078.18
  6. Step 6: Final answer
    x = 256,835.22

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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.