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Finding the Fourth Proportional to 280,361.44, 420,111.44 and 190,287.01

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Solution

The fourth proportional to 280,361.44, 420,111.44 and 190,287.01 is: 285,138.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,361.44 : 420,111.44 = 190,287.01 : x
  2. Step 2: Convert to fraction form
    280,361.44/420,111.44 = 190,287.01/x
  3. Step 3: Cross multiply
    280,361.44x = 420,111.44 × 190,287.01
  4. Step 4: Simplify right side
    280,361.44x = 79,941,749,784.39
  5. Step 5: Solve for x
    x = 79,941,749,784.39/280,361.44
  6. Step 6: Final answer
    x = 285,138.18

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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.