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Finding the Fourth Proportional to 2,907.96, 4,361.87 and 716.69

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Solution

The fourth proportional to 2,907.96, 4,361.87 and 716.69 is: 1,075.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,907.96 : 4,361.87 = 716.69 : x
  2. Step 2: Convert to fraction form
    2,907.96/4,361.87 = 716.69/x
  3. Step 3: Cross multiply
    2,907.96x = 4,361.87 × 716.69
  4. Step 4: Simplify right side
    2,907.96x = 3,126,083.22
  5. Step 5: Solve for x
    x = 3,126,083.22/2,907.96
  6. Step 6: Final answer
    x = 1,075.01

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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.