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Finding the Fourth Proportional to 8,671.89, 11,967.15 and 4,692.99

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Solution

The fourth proportional to 8,671.89, 11,967.15 and 4,692.99 is: 6,476.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,671.89 : 11,967.15 = 4,692.99 : x
  2. Step 2: Convert to fraction form
    8,671.89/11,967.15 = 4,692.99/x
  3. Step 3: Cross multiply
    8,671.89x = 11,967.15 × 4,692.99
  4. Step 4: Simplify right side
    8,671.89x = 56,161,715.28
  5. Step 5: Solve for x
    x = 56,161,715.28/8,671.89
  6. Step 6: Final answer
    x = 6,476.29

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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.