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Finding the Fourth Proportional to 518,342.31, 777,863.80 and 181,385.94

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Solution

The fourth proportional to 518,342.31, 777,863.80 and 181,385.94 is: 272,201.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,342.31 : 777,863.80 = 181,385.94 : x
  2. Step 2: Convert to fraction form
    518,342.31/777,863.80 = 181,385.94/x
  3. Step 3: Cross multiply
    518,342.31x = 777,863.80 × 181,385.94
  4. Step 4: Simplify right side
    518,342.31x = 141,093,556,554.97
  5. Step 5: Solve for x
    x = 141,093,556,554.97/518,342.31
  6. Step 6: Final answer
    x = 272,201.51

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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.