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Finding the Fourth Proportional to 192,690.18, 289,079.19 and 103,941.72

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Solution

The fourth proportional to 192,690.18, 289,079.19 and 103,941.72 is: 155,936.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,690.18 : 289,079.19 = 103,941.72 : x
  2. Step 2: Convert to fraction form
    192,690.18/289,079.19 = 103,941.72/x
  3. Step 3: Cross multiply
    192,690.18x = 289,079.19 × 103,941.72
  4. Step 4: Simplify right side
    192,690.18x = 30,047,388,224.81
  5. Step 5: Solve for x
    x = 30,047,388,224.81/192,690.18
  6. Step 6: Final answer
    x = 155,936.27

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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.