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Finding the Fourth Proportional to 4,834.88, 7,239.70 and 2,639.07

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Solution

The fourth proportional to 4,834.88, 7,239.70 and 2,639.07 is: 3,951.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,834.88 : 7,239.70 = 2,639.07 : x
  2. Step 2: Convert to fraction form
    4,834.88/7,239.70 = 2,639.07/x
  3. Step 3: Cross multiply
    4,834.88x = 7,239.70 × 2,639.07
  4. Step 4: Simplify right side
    4,834.88x = 19,106,075.08
  5. Step 5: Solve for x
    x = 19,106,075.08/4,834.88
  6. Step 6: Final answer
    x = 3,951.72

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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.