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Finding the Fourth Proportional to 20,153.19, 27,809.19 and 11,654.03

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Solution

The fourth proportional to 20,153.19, 27,809.19 and 11,654.03 is: 16,081.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,153.19 : 27,809.19 = 11,654.03 : x
  2. Step 2: Convert to fraction form
    20,153.19/27,809.19 = 11,654.03/x
  3. Step 3: Cross multiply
    20,153.19x = 27,809.19 × 11,654.03
  4. Step 4: Simplify right side
    20,153.19x = 324,089,047.63
  5. Step 5: Solve for x
    x = 324,089,047.63/20,153.19
  6. Step 6: Final answer
    x = 16,081.28

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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.