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Finding the Fourth Proportional to 10,961.70, 16,466.85 and 10,518.90

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Solution

The fourth proportional to 10,961.70, 16,466.85 and 10,518.90 is: 15,801.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,961.70 : 16,466.85 = 10,518.90 : x
  2. Step 2: Convert to fraction form
    10,961.70/16,466.85 = 10,518.90/x
  3. Step 3: Cross multiply
    10,961.70x = 16,466.85 × 10,518.90
  4. Step 4: Simplify right side
    10,961.70x = 173,213,148.47
  5. Step 5: Solve for x
    x = 173,213,148.47/10,961.70
  6. Step 6: Final answer
    x = 15,801.67

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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.