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Finding the Fourth Proportional to 7,805.55, 11,736.45 and 7,196.70

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Solution

The fourth proportional to 7,805.55, 11,736.45 and 7,196.70 is: 10,820.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,805.55 : 11,736.45 = 7,196.70 : x
  2. Step 2: Convert to fraction form
    7,805.55/11,736.45 = 7,196.70/x
  3. Step 3: Cross multiply
    7,805.55x = 11,736.45 × 7,196.70
  4. Step 4: Simplify right side
    7,805.55x = 84,463,709.72
  5. Step 5: Solve for x
    x = 84,463,709.72/7,805.55
  6. Step 6: Final answer
    x = 10,820.98

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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.