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Finding the Fourth Proportional to 212,791.76, 293,650.64 and 115,995.60

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Solution

The fourth proportional to 212,791.76, 293,650.64 and 115,995.60 is: 160,072.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,791.76 : 293,650.64 = 115,995.60 : x
  2. Step 2: Convert to fraction form
    212,791.76/293,650.64 = 115,995.60/x
  3. Step 3: Cross multiply
    212,791.76x = 293,650.64 × 115,995.60
  4. Step 4: Simplify right side
    212,791.76x = 34,062,182,177.18
  5. Step 5: Solve for x
    x = 34,062,182,177.18/212,791.76
  6. Step 6: Final answer
    x = 160,072.84

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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.