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Finding the Fourth Proportional to 156,980.60, 235,470.90 and 125,876.60

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Solution

The fourth proportional to 156,980.60, 235,470.90 and 125,876.60 is: 188,814.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,980.60 : 235,470.90 = 125,876.60 : x
  2. Step 2: Convert to fraction form
    156,980.60/235,470.90 = 125,876.60/x
  3. Step 3: Cross multiply
    156,980.60x = 235,470.90 × 125,876.60
  4. Step 4: Simplify right side
    156,980.60x = 29,640,276,290.94
  5. Step 5: Solve for x
    x = 29,640,276,290.94/156,980.60
  6. Step 6: Final answer
    x = 188,814.90

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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.