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Finding the Fourth Proportional to 1,692.88, 2,336.55 and 994.48

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Solution

The fourth proportional to 1,692.88, 2,336.55 and 994.48 is: 1,372.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,692.88 : 2,336.55 = 994.48 : x
  2. Step 2: Convert to fraction form
    1,692.88/2,336.55 = 994.48/x
  3. Step 3: Cross multiply
    1,692.88x = 2,336.55 × 994.48
  4. Step 4: Simplify right side
    1,692.88x = 2,323,652.24
  5. Step 5: Solve for x
    x = 2,323,652.24/1,692.88
  6. Step 6: Final answer
    x = 1,372.60

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1.5x scale

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.