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Finding the Fourth Proportional to 18,518.01, 25,554.93 and 17,105.31

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Solution

The fourth proportional to 18,518.01, 25,554.93 and 17,105.31 is: 23,605.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,518.01 : 25,554.93 = 17,105.31 : x
  2. Step 2: Convert to fraction form
    18,518.01/25,554.93 = 17,105.31/x
  3. Step 3: Cross multiply
    18,518.01x = 25,554.93 × 17,105.31
  4. Step 4: Simplify right side
    18,518.01x = 437,124,786.38
  5. Step 5: Solve for x
    x = 437,124,786.38/18,518.01
  6. Step 6: Final answer
    x = 23,605.39

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Half scale
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Double scale
Find fourth proportional to 18,519.01, 25,556.31 and 17,106.31
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.