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Finding the Fourth Proportional to 275,963.46, 380,980.36 and 167,086.40

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Solution

The fourth proportional to 275,963.46, 380,980.36 and 167,086.40 is: 230,670.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,963.46 : 380,980.36 = 167,086.40 : x
  2. Step 2: Convert to fraction form
    275,963.46/380,980.36 = 167,086.40/x
  3. Step 3: Cross multiply
    275,963.46x = 380,980.36 × 167,086.40
  4. Step 4: Simplify right side
    275,963.46x = 63,656,635,127.06
  5. Step 5: Solve for x
    x = 63,656,635,127.06/275,963.46
  6. Step 6: Final answer
    x = 230,670.52

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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.