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Finding the Fourth Proportional to 366,982.99, 550,449.72 and 100,721.20

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Solution

The fourth proportional to 366,982.99, 550,449.72 and 100,721.20 is: 151,075.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,982.99 : 550,449.72 = 100,721.20 : x
  2. Step 2: Convert to fraction form
    366,982.99/550,449.72 = 100,721.20/x
  3. Step 3: Cross multiply
    366,982.99x = 550,449.72 × 100,721.20
  4. Step 4: Simplify right side
    366,982.99x = 55,441,956,338.06
  5. Step 5: Solve for x
    x = 55,441,956,338.06/366,982.99
  6. Step 6: Final answer
    x = 151,075.00

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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.