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Finding the Fourth Proportional to 18,608.67, 25,678.76 and 10,224.63

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Solution

The fourth proportional to 18,608.67, 25,678.76 and 10,224.63 is: 14,109.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,608.67 : 25,678.76 = 10,224.63 : x
  2. Step 2: Convert to fraction form
    18,608.67/25,678.76 = 10,224.63/x
  3. Step 3: Cross multiply
    18,608.67x = 25,678.76 × 10,224.63
  4. Step 4: Simplify right side
    18,608.67x = 262,555,768.74
  5. Step 5: Solve for x
    x = 262,555,768.74/18,608.67
  6. Step 6: Final answer
    x = 14,109.32

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Half scale
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Double scale
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Similar ratio
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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.