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Finding the Fourth Proportional to 7,692.20, 11,549.10 and 4,776.20

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Solution

The fourth proportional to 7,692.20, 11,549.10 and 4,776.20 is: 7,171.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,692.20 : 11,549.10 = 4,776.20 : x
  2. Step 2: Convert to fraction form
    7,692.20/11,549.10 = 4,776.20/x
  3. Step 3: Cross multiply
    7,692.20x = 11,549.10 × 4,776.20
  4. Step 4: Simplify right side
    7,692.20x = 55,160,811.42
  5. Step 5: Solve for x
    x = 55,160,811.42/7,692.20
  6. Step 6: Final answer
    x = 7,171.01

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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.