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Finding the Fourth Proportional to 18,550.76, 25,598.76 and 10,996.70

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Solution

The fourth proportional to 18,550.76, 25,598.76 and 10,996.70 is: 15,174.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,550.76 : 25,598.76 = 10,996.70 : x
  2. Step 2: Convert to fraction form
    18,550.76/25,598.76 = 10,996.70/x
  3. Step 3: Cross multiply
    18,550.76x = 25,598.76 × 10,996.70
  4. Step 4: Simplify right side
    18,550.76x = 281,501,884.09
  5. Step 5: Solve for x
    x = 281,501,884.09/18,550.76
  6. Step 6: Final answer
    x = 15,174.68

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Half scale
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Double scale
Find fourth proportional to 18,551.76, 25,600.14 and 10,997.70
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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.