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Finding the Fourth Proportional to 366,666.31, 550,841.51 and 258,843.61

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Solution

The fourth proportional to 366,666.31, 550,841.51 and 258,843.61 is: 388,859.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,666.31 : 550,841.51 = 258,843.61 : x
  2. Step 2: Convert to fraction form
    366,666.31/550,841.51 = 258,843.61/x
  3. Step 3: Cross multiply
    366,666.31x = 550,841.51 × 258,843.61
  4. Step 4: Simplify right side
    366,666.31x = 142,581,804,986.25
  5. Step 5: Solve for x
    x = 142,581,804,986.25/366,666.31
  6. Step 6: Final answer
    x = 388,859.85

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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.