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Finding the Fourth Proportional to 331,891.40, 458,051.28 and 202,803.32

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Solution

The fourth proportional to 331,891.40, 458,051.28 and 202,803.32 is: 279,893.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,891.40 : 458,051.28 = 202,803.32 : x
  2. Step 2: Convert to fraction form
    331,891.40/458,051.28 = 202,803.32/x
  3. Step 3: Cross multiply
    331,891.40x = 458,051.28 × 202,803.32
  4. Step 4: Simplify right side
    331,891.40x = 92,894,320,314.25
  5. Step 5: Solve for x
    x = 92,894,320,314.25/331,891.40
  6. Step 6: Final answer
    x = 279,893.73

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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.