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Finding the Fourth Proportional to 4,692.76, 7,040.10 and 1,771

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Solution

The fourth proportional to 4,692.76, 7,040.10 and 1,771 is: 2,656.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,692.76 : 7,040.10 = 1,771 : x
  2. Step 2: Convert to fraction form
    4,692.76/7,040.10 = 1,771/x
  3. Step 3: Cross multiply
    4,692.76x = 7,040.10 × 1,771
  4. Step 4: Simplify right side
    4,692.76x = 12,468,017.10
  5. Step 5: Solve for x
    x = 12,468,017.10/4,692.76
  6. Step 6: Final answer
    x = 2,656.86

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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.