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Finding the Fourth Proportional to 372,791.45, 514,466.76 and 211,661.49

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Solution

The fourth proportional to 372,791.45, 514,466.76 and 211,661.49 is: 292,101.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,791.45 : 514,466.76 = 211,661.49 : x
  2. Step 2: Convert to fraction form
    372,791.45/514,466.76 = 211,661.49/x
  3. Step 3: Cross multiply
    372,791.45x = 514,466.76 × 211,661.49
  4. Step 4: Simplify right side
    372,791.45x = 108,892,800,977.07
  5. Step 5: Solve for x
    x = 108,892,800,977.07/372,791.45
  6. Step 6: Final answer
    x = 292,101.13

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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.