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Finding the Fourth Proportional to 2,692.79, 4,041.15 and 1,768.02

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Solution

The fourth proportional to 2,692.79, 4,041.15 and 1,768.02 is: 2,653.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,692.79 : 4,041.15 = 1,768.02 : x
  2. Step 2: Convert to fraction form
    2,692.79/4,041.15 = 1,768.02/x
  3. Step 3: Cross multiply
    2,692.79x = 4,041.15 × 1,768.02
  4. Step 4: Simplify right side
    2,692.79x = 7,144,812.24
  5. Step 5: Solve for x
    x = 7,144,812.24/2,692.79
  6. Step 6: Final answer
    x = 2,653.31

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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.