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Finding the Fourth Proportional to 425,694.02, 638,109.84 and 276,029.24

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Solution

The fourth proportional to 425,694.02, 638,109.84 and 276,029.24 is: 413,764.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,694.02 : 638,109.84 = 276,029.24 : x
  2. Step 2: Convert to fraction form
    425,694.02/638,109.84 = 276,029.24/x
  3. Step 3: Cross multiply
    425,694.02x = 638,109.84 × 276,029.24
  4. Step 4: Simplify right side
    425,694.02x = 176,136,974,171.72
  5. Step 5: Solve for x
    x = 176,136,974,171.72/425,694.02
  6. Step 6: Final answer
    x = 413,764.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.