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Finding the Fourth Proportional to 13,896.60, 20,844.90 and 7,335.60

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Solution

The fourth proportional to 13,896.60, 20,844.90 and 7,335.60 is: 11,003.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,896.60 : 20,844.90 = 7,335.60 : x
  2. Step 2: Convert to fraction form
    13,896.60/20,844.90 = 7,335.60/x
  3. Step 3: Cross multiply
    13,896.60x = 20,844.90 × 7,335.60
  4. Step 4: Simplify right side
    13,896.60x = 152,909,848.44
  5. Step 5: Solve for x
    x = 152,909,848.44/13,896.60
  6. Step 6: Final answer
    x = 11,003.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.