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Finding the Fourth Proportional to 339,201.20, 508,859.40 and 181,386.80

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Solution

The fourth proportional to 339,201.20, 508,859.40 and 181,386.80 is: 272,111.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,201.20 : 508,859.40 = 181,386.80 : x
  2. Step 2: Convert to fraction form
    339,201.20/508,859.40 = 181,386.80/x
  3. Step 3: Cross multiply
    339,201.20x = 508,859.40 × 181,386.80
  4. Step 4: Simplify right side
    339,201.20x = 92,300,378,215.92
  5. Step 5: Solve for x
    x = 92,300,378,215.92/339,201.20
  6. Step 6: Final answer
    x = 272,111.00

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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.