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Finding the Fourth Proportional to 223,141.80, 308,055.78 and 172,042.41

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Solution

The fourth proportional to 223,141.80, 308,055.78 and 172,042.41 is: 237,511.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,141.80 : 308,055.78 = 172,042.41 : x
  2. Step 2: Convert to fraction form
    223,141.80/308,055.78 = 172,042.41/x
  3. Step 3: Cross multiply
    223,141.80x = 308,055.78 × 172,042.41
  4. Step 4: Simplify right side
    223,141.80x = 52,998,658,805.63
  5. Step 5: Solve for x
    x = 52,998,658,805.63/223,141.80
  6. Step 6: Final answer
    x = 237,511.12

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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.