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Finding the Fourth Proportional to 125,450.67, 188,075.62 and 65,449.03

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Solution

The fourth proportional to 125,450.67, 188,075.62 and 65,449.03 is: 98,121.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,450.67 : 188,075.62 = 65,449.03 : x
  2. Step 2: Convert to fraction form
    125,450.67/188,075.62 = 65,449.03/x
  3. Step 3: Cross multiply
    125,450.67x = 188,075.62 × 65,449.03
  4. Step 4: Simplify right side
    125,450.67x = 12,309,366,859.91
  5. Step 5: Solve for x
    x = 12,309,366,859.91/125,450.67
  6. Step 6: Final answer
    x = 98,121.17

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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.