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Finding the Fourth Proportional to 12,775.26, 17,632.31 and 7,186.26

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Solution

The fourth proportional to 12,775.26, 17,632.31 and 7,186.26 is: 9,918.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,775.26 : 17,632.31 = 7,186.26 : x
  2. Step 2: Convert to fraction form
    12,775.26/17,632.31 = 7,186.26/x
  3. Step 3: Cross multiply
    12,775.26x = 17,632.31 × 7,186.26
  4. Step 4: Simplify right side
    12,775.26x = 126,710,328.13
  5. Step 5: Solve for x
    x = 126,710,328.13/12,775.26
  6. Step 6: Final answer
    x = 9,918.41

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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.