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Finding the Fourth Proportional to 397,754.51, 548,890.69 and 216,462.55

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Solution

The fourth proportional to 397,754.51, 548,890.69 and 216,462.55 is: 298,712.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,754.51 : 548,890.69 = 216,462.55 : x
  2. Step 2: Convert to fraction form
    397,754.51/548,890.69 = 216,462.55/x
  3. Step 3: Cross multiply
    397,754.51x = 548,890.69 × 216,462.55
  4. Step 4: Simplify right side
    397,754.51x = 118,814,278,428.66
  5. Step 5: Solve for x
    x = 118,814,278,428.66/397,754.51
  6. Step 6: Final answer
    x = 298,712.59

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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.