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Finding the Fourth Proportional to 14,959.63, 20,644.22 and 8,153.64

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Solution

The fourth proportional to 14,959.63, 20,644.22 and 8,153.64 is: 11,251.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,959.63 : 20,644.22 = 8,153.64 : x
  2. Step 2: Convert to fraction form
    14,959.63/20,644.22 = 8,153.64/x
  3. Step 3: Cross multiply
    14,959.63x = 20,644.22 × 8,153.64
  4. Step 4: Simplify right side
    14,959.63x = 168,325,393.97
  5. Step 5: Solve for x
    x = 168,325,393.97/14,959.63
  6. Step 6: Final answer
    x = 11,251.98

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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.