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Finding the Fourth Proportional to 10,892.80, 16,314.90 and 5,692.60

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Solution

The fourth proportional to 10,892.80, 16,314.90 and 5,692.60 is: 8,526.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,892.80 : 16,314.90 = 5,692.60 : x
  2. Step 2: Convert to fraction form
    10,892.80/16,314.90 = 5,692.60/x
  3. Step 3: Cross multiply
    10,892.80x = 16,314.90 × 5,692.60
  4. Step 4: Simplify right side
    10,892.80x = 92,874,199.74
  5. Step 5: Solve for x
    x = 92,874,199.74/10,892.80
  6. Step 6: Final answer
    x = 8,526.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.