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Finding the Fourth Proportional to 455,757.49, 628,970.57 and 251,804.04

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Solution

The fourth proportional to 455,757.49, 628,970.57 and 251,804.04 is: 347,503.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,757.49 : 628,970.57 = 251,804.04 : x
  2. Step 2: Convert to fraction form
    455,757.49/628,970.57 = 251,804.04/x
  3. Step 3: Cross multiply
    455,757.49x = 628,970.57 × 251,804.04
  4. Step 4: Simplify right side
    455,757.49x = 158,377,331,431.67
  5. Step 5: Solve for x
    x = 158,377,331,431.67/455,757.49
  6. Step 6: Final answer
    x = 347,503.52

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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.