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Finding the Fourth Proportional to 13,759.99, 18,996.66 and 9,057.94

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Solution

The fourth proportional to 13,759.99, 18,996.66 and 9,057.94 is: 12,505.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,759.99 : 18,996.66 = 9,057.94 : x
  2. Step 2: Convert to fraction form
    13,759.99/18,996.66 = 9,057.94/x
  3. Step 3: Cross multiply
    13,759.99x = 18,996.66 × 9,057.94
  4. Step 4: Simplify right side
    13,759.99x = 172,070,566.60
  5. Step 5: Solve for x
    x = 172,070,566.60/13,759.99
  6. Step 6: Final answer
    x = 12,505.14

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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.