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Finding the Fourth Proportional to 16,728.30, 23,085.05 and 9,276.30

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Solution

The fourth proportional to 16,728.30, 23,085.05 and 9,276.30 is: 12,801.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,728.30 : 23,085.05 = 9,276.30 : x
  2. Step 2: Convert to fraction form
    16,728.30/23,085.05 = 9,276.30/x
  3. Step 3: Cross multiply
    16,728.30x = 23,085.05 × 9,276.30
  4. Step 4: Simplify right side
    16,728.30x = 214,143,791.60
  5. Step 5: Solve for x
    x = 214,143,791.60/16,728.30
  6. Step 6: Final answer
    x = 12,801.29

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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.