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Finding the Fourth Proportional to 25,605.36, 38,407.99 and 7,137.36

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Solution

The fourth proportional to 25,605.36, 38,407.99 and 7,137.36 is: 10,706.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,605.36 : 38,407.99 = 7,137.36 : x
  2. Step 2: Convert to fraction form
    25,605.36/38,407.99 = 7,137.36/x
  3. Step 3: Cross multiply
    25,605.36x = 38,407.99 × 7,137.36
  4. Step 4: Simplify right side
    25,605.36x = 274,131,651.51
  5. Step 5: Solve for x
    x = 274,131,651.51/25,605.36
  6. Step 6: Final answer
    x = 10,706.03

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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.