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Finding the Fourth Proportional to 340,554.05, 510,043.72 and 328,744.25

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Solution

The fourth proportional to 340,554.05, 510,043.72 and 328,744.25 is: 492,356.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,554.05 : 510,043.72 = 328,744.25 : x
  2. Step 2: Convert to fraction form
    340,554.05/510,043.72 = 328,744.25/x
  3. Step 3: Cross multiply
    340,554.05x = 510,043.72 × 328,744.25
  4. Step 4: Simplify right side
    340,554.05x = 167,673,940,198.61
  5. Step 5: Solve for x
    x = 167,673,940,198.61/340,554.05
  6. Step 6: Final answer
    x = 492,356.32

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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.