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Finding the Fourth Proportional to 98,791.56, 136,333.44 and 56,352.60

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Solution

The fourth proportional to 98,791.56, 136,333.44 and 56,352.60 is: 77,767.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,791.56 : 136,333.44 = 56,352.60 : x
  2. Step 2: Convert to fraction form
    98,791.56/136,333.44 = 56,352.60/x
  3. Step 3: Cross multiply
    98,791.56x = 136,333.44 × 56,352.60
  4. Step 4: Simplify right side
    98,791.56x = 7,682,743,810.94
  5. Step 5: Solve for x
    x = 7,682,743,810.94/98,791.56
  6. Step 6: Final answer
    x = 77,767.21

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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.