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Finding the Fourth Proportional to 170,978.98, 236,016.84 and 153,042.34

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Solution

The fourth proportional to 170,978.98, 236,016.84 and 153,042.34 is: 211,257.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,978.98 : 236,016.84 = 153,042.34 : x
  2. Step 2: Convert to fraction form
    170,978.98/236,016.84 = 153,042.34/x
  3. Step 3: Cross multiply
    170,978.98x = 236,016.84 × 153,042.34
  4. Step 4: Simplify right side
    170,978.98x = 36,120,569,473.01
  5. Step 5: Solve for x
    x = 36,120,569,473.01/170,978.98
  6. Step 6: Final answer
    x = 211,257.37

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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.