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Finding the Fourth Proportional to 8,671.72, 11,966.92 and 4,692.75

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Solution

The fourth proportional to 8,671.72, 11,966.92 and 4,692.75 is: 6,475.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,671.72 : 11,966.92 = 4,692.75 : x
  2. Step 2: Convert to fraction form
    8,671.72/11,966.92 = 4,692.75/x
  3. Step 3: Cross multiply
    8,671.72x = 11,966.92 × 4,692.75
  4. Step 4: Simplify right side
    8,671.72x = 56,157,763.83
  5. Step 5: Solve for x
    x = 56,157,763.83/8,671.72
  6. Step 6: Final answer
    x = 6,475.97

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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.