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Finding the Fourth Proportional to 170,039.70, 255,059.55 and 161,874.90

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Solution

The fourth proportional to 170,039.70, 255,059.55 and 161,874.90 is: 242,812.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,039.70 : 255,059.55 = 161,874.90 : x
  2. Step 2: Convert to fraction form
    170,039.70/255,059.55 = 161,874.90/x
  3. Step 3: Cross multiply
    170,039.70x = 255,059.55 × 161,874.90
  4. Step 4: Simplify right side
    170,039.70x = 41,287,739,150.30
  5. Step 5: Solve for x
    x = 41,287,739,150.30/170,039.70
  6. Step 6: Final answer
    x = 242,812.35

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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.