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Finding the Fourth Proportional to 611,077.42, 843,247.51 and 339,145.48

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Solution

The fourth proportional to 611,077.42, 843,247.51 and 339,145.48 is: 467,998.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,077.42 : 843,247.51 = 339,145.48 : x
  2. Step 2: Convert to fraction form
    611,077.42/843,247.51 = 339,145.48/x
  3. Step 3: Cross multiply
    611,077.42x = 843,247.51 × 339,145.48
  4. Step 4: Simplify right side
    611,077.42x = 285,983,583,651.64
  5. Step 5: Solve for x
    x = 285,983,583,651.64/611,077.42
  6. Step 6: Final answer
    x = 467,998.94

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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.