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Finding the Fourth Proportional to 13,893.53, 19,172.91 and 7,519.99

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Solution

The fourth proportional to 13,893.53, 19,172.91 and 7,519.99 is: 10,377.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,893.53 : 19,172.91 = 7,519.99 : x
  2. Step 2: Convert to fraction form
    13,893.53/19,172.91 = 7,519.99/x
  3. Step 3: Cross multiply
    13,893.53x = 19,172.91 × 7,519.99
  4. Step 4: Simplify right side
    13,893.53x = 144,180,043.54
  5. Step 5: Solve for x
    x = 144,180,043.54/13,893.53
  6. Step 6: Final answer
    x = 10,377.50

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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.