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Finding the Fourth Proportional to 120,544.62, 180,829.08 and 31,804.26

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Solution

The fourth proportional to 120,544.62, 180,829.08 and 31,804.26 is: 47,709.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,544.62 : 180,829.08 = 31,804.26 : x
  2. Step 2: Convert to fraction form
    120,544.62/180,829.08 = 31,804.26/x
  3. Step 3: Cross multiply
    120,544.62x = 180,829.08 × 31,804.26
  4. Step 4: Simplify right side
    120,544.62x = 5,751,135,075.88
  5. Step 5: Solve for x
    x = 5,751,135,075.88/120,544.62
  6. Step 6: Final answer
    x = 47,709.60

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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.