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Finding the Fourth Proportional to 13,886.17, 19,163.15 and 9,914.03

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Solution

The fourth proportional to 13,886.17, 19,163.15 and 9,914.03 is: 13,681.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,886.17 : 19,163.15 = 9,914.03 : x
  2. Step 2: Convert to fraction form
    13,886.17/19,163.15 = 9,914.03/x
  3. Step 3: Cross multiply
    13,886.17x = 19,163.15 × 9,914.03
  4. Step 4: Simplify right side
    13,886.17x = 189,984,043.99
  5. Step 5: Solve for x
    x = 189,984,043.99/13,886.17
  6. Step 6: Final answer
    x = 13,681.53

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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.