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Finding the Fourth Proportional to 28,755.24, 43,128.06 and 7,973.16

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Solution

The fourth proportional to 28,755.24, 43,128.06 and 7,973.16 is: 11,958.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,755.24 : 43,128.06 = 7,973.16 : x
  2. Step 2: Convert to fraction form
    28,755.24/43,128.06 = 7,973.16/x
  3. Step 3: Cross multiply
    28,755.24x = 43,128.06 × 7,973.16
  4. Step 4: Simplify right side
    28,755.24x = 343,866,922.87
  5. Step 5: Solve for x
    x = 343,866,922.87/28,755.24
  6. Step 6: Final answer
    x = 11,958.41

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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.