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Finding the Fourth Proportional to 1,692.79, 2,335.34 and 1,063.12

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Solution

The fourth proportional to 1,692.79, 2,335.34 and 1,063.12 is: 1,466.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,692.79 : 2,335.34 = 1,063.12 : x
  2. Step 2: Convert to fraction form
    1,692.79/2,335.34 = 1,063.12/x
  3. Step 3: Cross multiply
    1,692.79x = 2,335.34 × 1,063.12
  4. Step 4: Simplify right side
    1,692.79x = 2,482,743.48
  5. Step 5: Solve for x
    x = 2,482,743.48/1,692.79
  6. Step 6: Final answer
    x = 1,466.66

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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.