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Finding the Fourth Proportional to 8,671.56, 11,966.76 and 4,692.68

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Solution

The fourth proportional to 8,671.56, 11,966.76 and 4,692.68 is: 6,475.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,671.56 : 11,966.76 = 4,692.68 : x
  2. Step 2: Convert to fraction form
    8,671.56/11,966.76 = 4,692.68/x
  3. Step 3: Cross multiply
    8,671.56x = 11,966.76 × 4,692.68
  4. Step 4: Simplify right side
    8,671.56x = 56,156,175.32
  5. Step 5: Solve for x
    x = 56,156,175.32/8,671.56
  6. Step 6: Final answer
    x = 6,475.90

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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.