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Finding the Fourth Proportional to 13,617.44, 20,429.44 and 4,731.48

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Solution

The fourth proportional to 13,617.44, 20,429.44 and 4,731.48 is: 7,098.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,617.44 : 20,429.44 = 4,731.48 : x
  2. Step 2: Convert to fraction form
    13,617.44/20,429.44 = 4,731.48/x
  3. Step 3: Cross multiply
    13,617.44x = 20,429.44 × 4,731.48
  4. Step 4: Simplify right side
    13,617.44x = 96,661,402.06
  5. Step 5: Solve for x
    x = 96,661,402.06/13,617.44
  6. Step 6: Final answer
    x = 7,098.35

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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.