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Finding the Fourth Proportional to 11,396.70, 15,709.95 and 8,029.94

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Solution

The fourth proportional to 11,396.70, 15,709.95 and 8,029.94 is: 11,068.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,396.70 : 15,709.95 = 8,029.94 : x
  2. Step 2: Convert to fraction form
    11,396.70/15,709.95 = 8,029.94/x
  3. Step 3: Cross multiply
    11,396.70x = 15,709.95 × 8,029.94
  4. Step 4: Simplify right side
    11,396.70x = 126,149,877.35
  5. Step 5: Solve for x
    x = 126,149,877.35/11,396.70
  6. Step 6: Final answer
    x = 11,068.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.