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Finding the Fourth Proportional to 11,776.60, 17,664.90 and 3,012.20

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Solution

The fourth proportional to 11,776.60, 17,664.90 and 3,012.20 is: 4,518.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,776.60 : 17,664.90 = 3,012.20 : x
  2. Step 2: Convert to fraction form
    11,776.60/17,664.90 = 3,012.20/x
  3. Step 3: Cross multiply
    11,776.60x = 17,664.90 × 3,012.20
  4. Step 4: Simplify right side
    11,776.60x = 53,210,211.78
  5. Step 5: Solve for x
    x = 53,210,211.78/11,776.60
  6. Step 6: Final answer
    x = 4,518.30

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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.