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Finding the Fourth Proportional to 143,940.48, 215,941.44 and 50,451.84

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Solution

The fourth proportional to 143,940.48, 215,941.44 and 50,451.84 is: 75,688.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,940.48 : 215,941.44 = 50,451.84 : x
  2. Step 2: Convert to fraction form
    143,940.48/215,941.44 = 50,451.84/x
  3. Step 3: Cross multiply
    143,940.48x = 215,941.44 × 50,451.84
  4. Step 4: Simplify right side
    143,940.48x = 10,894,642,980.25
  5. Step 5: Solve for x
    x = 10,894,642,980.25/143,940.48
  6. Step 6: Final answer
    x = 75,688.53

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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.