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Finding the Fourth Proportional to 189,861.10, 284,791.65 and 101,068.90

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Solution

The fourth proportional to 189,861.10, 284,791.65 and 101,068.90 is: 151,603.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,861.10 : 284,791.65 = 101,068.90 : x
  2. Step 2: Convert to fraction form
    189,861.10/284,791.65 = 101,068.90/x
  3. Step 3: Cross multiply
    189,861.10x = 284,791.65 × 101,068.90
  4. Step 4: Simplify right side
    189,861.10x = 28,783,578,794.69
  5. Step 5: Solve for x
    x = 28,783,578,794.69/189,861.10
  6. Step 6: Final answer
    x = 151,603.35

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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.