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Finding the Fourth Proportional to 13,714.52, 18,918.72 and 9,230.60

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Solution

The fourth proportional to 13,714.52, 18,918.72 and 9,230.60 is: 12,733.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,714.52 : 18,918.72 = 9,230.60 : x
  2. Step 2: Convert to fraction form
    13,714.52/18,918.72 = 9,230.60/x
  3. Step 3: Cross multiply
    13,714.52x = 18,918.72 × 9,230.60
  4. Step 4: Simplify right side
    13,714.52x = 174,631,136.83
  5. Step 5: Solve for x
    x = 174,631,136.83/13,714.52
  6. Step 6: Final answer
    x = 12,733.30

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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.