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Finding the Fourth Proportional to 189,801.90, 284,812.20 and 71,558.10

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Solution

The fourth proportional to 189,801.90, 284,812.20 and 71,558.10 is: 107,378.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,801.90 : 284,812.20 = 71,558.10 : x
  2. Step 2: Convert to fraction form
    189,801.90/284,812.20 = 71,558.10/x
  3. Step 3: Cross multiply
    189,801.90x = 284,812.20 × 71,558.10
  4. Step 4: Simplify right side
    189,801.90x = 20,380,619,888.82
  5. Step 5: Solve for x
    x = 20,380,619,888.82/189,801.90
  6. Step 6: Final answer
    x = 107,378.38

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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.