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Finding the Fourth Proportional to 13,662.08, 20,498.16 and 5,346.08

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Solution

The fourth proportional to 13,662.08, 20,498.16 and 5,346.08 is: 8,021.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,662.08 : 20,498.16 = 5,346.08 : x
  2. Step 2: Convert to fraction form
    13,662.08/20,498.16 = 5,346.08/x
  3. Step 3: Cross multiply
    13,662.08x = 20,498.16 × 5,346.08
  4. Step 4: Simplify right side
    13,662.08x = 109,584,803.21
  5. Step 5: Solve for x
    x = 109,584,803.21/13,662.08
  6. Step 6: Final answer
    x = 8,021.09

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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.