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Finding the Fourth Proportional to 8,401.75, 12,602.63 and 2,245.75

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Solution

The fourth proportional to 8,401.75, 12,602.63 and 2,245.75 is: 3,368.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,401.75 : 12,602.63 = 2,245.75 : x
  2. Step 2: Convert to fraction form
    8,401.75/12,602.63 = 2,245.75/x
  3. Step 3: Cross multiply
    8,401.75x = 12,602.63 × 2,245.75
  4. Step 4: Simplify right side
    8,401.75x = 28,302,356.32
  5. Step 5: Solve for x
    x = 28,302,356.32/8,401.75
  6. Step 6: Final answer
    x = 3,368.63

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Half scale
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Similar ratio
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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.