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Finding the Fourth Proportional to 118,269.80, 176,892.70 and 105,879.40

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Solution

The fourth proportional to 118,269.80, 176,892.70 and 105,879.40 is: 158,360.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,269.80 : 176,892.70 = 105,879.40 : x
  2. Step 2: Convert to fraction form
    118,269.80/176,892.70 = 105,879.40/x
  3. Step 3: Cross multiply
    118,269.80x = 176,892.70 × 105,879.40
  4. Step 4: Simplify right side
    118,269.80x = 18,729,292,940.38
  5. Step 5: Solve for x
    x = 18,729,292,940.38/118,269.80
  6. Step 6: Final answer
    x = 158,360.74

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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.