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Finding the Fourth Proportional to 115,790.60, 173,621.10 and 49,219.40

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Solution

The fourth proportional to 115,790.60, 173,621.10 and 49,219.40 is: 73,801.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,790.60 : 173,621.10 = 49,219.40 : x
  2. Step 2: Convert to fraction form
    115,790.60/173,621.10 = 49,219.40/x
  3. Step 3: Cross multiply
    115,790.60x = 173,621.10 × 49,219.40
  4. Step 4: Simplify right side
    115,790.60x = 8,545,526,369.34
  5. Step 5: Solve for x
    x = 8,545,526,369.34/115,790.60
  6. Step 6: Final answer
    x = 73,801.56

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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.