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Finding the Fourth Proportional to 12,696.44, 19,042.50 and 4,905.32

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Solution

The fourth proportional to 12,696.44, 19,042.50 and 4,905.32 is: 7,357.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,696.44 : 19,042.50 = 4,905.32 : x
  2. Step 2: Convert to fraction form
    12,696.44/19,042.50 = 4,905.32/x
  3. Step 3: Cross multiply
    12,696.44x = 19,042.50 × 4,905.32
  4. Step 4: Simplify right side
    12,696.44x = 93,409,556.10
  5. Step 5: Solve for x
    x = 93,409,556.10/12,696.44
  6. Step 6: Final answer
    x = 7,357.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.