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Finding the Fourth Proportional to 493,872.68, 681,528.30 and 276,075.56

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Solution

The fourth proportional to 493,872.68, 681,528.30 and 276,075.56 is: 380,975.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,872.68 : 681,528.30 = 276,075.56 : x
  2. Step 2: Convert to fraction form
    493,872.68/681,528.30 = 276,075.56/x
  3. Step 3: Cross multiply
    493,872.68x = 681,528.30 × 276,075.56
  4. Step 4: Simplify right side
    493,872.68x = 188,153,307,078.35
  5. Step 5: Solve for x
    x = 188,153,307,078.35/493,872.68
  6. Step 6: Final answer
    x = 380,975.33

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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.