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Finding the Fourth Proportional to 14,914.64, 20,583.52 and 8,201.58

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Solution

The fourth proportional to 14,914.64, 20,583.52 and 8,201.58 is: 11,318.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,914.64 : 20,583.52 = 8,201.58 : x
  2. Step 2: Convert to fraction form
    14,914.64/20,583.52 = 8,201.58/x
  3. Step 3: Cross multiply
    14,914.64x = 20,583.52 × 8,201.58
  4. Step 4: Simplify right side
    14,914.64x = 168,817,385.96
  5. Step 5: Solve for x
    x = 168,817,385.96/14,914.64
  6. Step 6: Final answer
    x = 11,318.90

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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.