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Finding the Fourth Proportional to 18,627.75, 25,699.01 and 10,665.69

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Solution

The fourth proportional to 18,627.75, 25,699.01 and 10,665.69 is: 14,714.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,627.75 : 25,699.01 = 10,665.69 : x
  2. Step 2: Convert to fraction form
    18,627.75/25,699.01 = 10,665.69/x
  3. Step 3: Cross multiply
    18,627.75x = 25,699.01 × 10,665.69
  4. Step 4: Simplify right side
    18,627.75x = 274,097,620.64
  5. Step 5: Solve for x
    x = 274,097,620.64/18,627.75
  6. Step 6: Final answer
    x = 14,714.48

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Half scale
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Double scale
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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.