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Finding the Fourth Proportional to 13,902.66, 19,186.48 and 7,936.25

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Solution

The fourth proportional to 13,902.66, 19,186.48 and 7,936.25 is: 10,952.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,902.66 : 19,186.48 = 7,936.25 : x
  2. Step 2: Convert to fraction form
    13,902.66/19,186.48 = 7,936.25/x
  3. Step 3: Cross multiply
    13,902.66x = 19,186.48 × 7,936.25
  4. Step 4: Simplify right side
    13,902.66x = 152,268,701.90
  5. Step 5: Solve for x
    x = 152,268,701.90/13,902.66
  6. Step 6: Final answer
    x = 10,952.49

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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.