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Finding the Fourth Proportional to 1,692.77, 2,335.84 and 984.48

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Solution

The fourth proportional to 1,692.77, 2,335.84 and 984.48 is: 1,358.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,692.77 : 2,335.84 = 984.48 : x
  2. Step 2: Convert to fraction form
    1,692.77/2,335.84 = 984.48/x
  3. Step 3: Cross multiply
    1,692.77x = 2,335.84 × 984.48
  4. Step 4: Simplify right side
    1,692.77x = 2,299,585.30
  5. Step 5: Solve for x
    x = 2,299,585.30/1,692.77
  6. Step 6: Final answer
    x = 1,358.48

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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.