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Finding the Fourth Proportional to 18,503.40, 25,538.40 and 11,796.96

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Solution

The fourth proportional to 18,503.40, 25,538.40 and 11,796.96 is: 16,282.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,503.40 : 25,538.40 = 11,796.96 : x
  2. Step 2: Convert to fraction form
    18,503.40/25,538.40 = 11,796.96/x
  3. Step 3: Cross multiply
    18,503.40x = 25,538.40 × 11,796.96
  4. Step 4: Simplify right side
    18,503.40x = 301,275,483.26
  5. Step 5: Solve for x
    x = 301,275,483.26/18,503.40
  6. Step 6: Final answer
    x = 16,282.17

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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.