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Finding the Fourth Proportional to 13,710.58, 18,902.99 and 11,245.82

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Solution

The fourth proportional to 13,710.58, 18,902.99 and 11,245.82 is: 15,504.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,710.58 : 18,902.99 = 11,245.82 : x
  2. Step 2: Convert to fraction form
    13,710.58/18,902.99 = 11,245.82/x
  3. Step 3: Cross multiply
    13,710.58x = 18,902.99 × 11,245.82
  4. Step 4: Simplify right side
    13,710.58x = 212,579,556.60
  5. Step 5: Solve for x
    x = 212,579,556.60/13,710.58
  6. Step 6: Final answer
    x = 15,504.79

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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.