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Finding the Fourth Proportional to 118,432.86, 177,719.25 and 43,605.54

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Solution

The fourth proportional to 118,432.86, 177,719.25 and 43,605.54 is: 65,434.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,432.86 : 177,719.25 = 43,605.54 : x
  2. Step 2: Convert to fraction form
    118,432.86/177,719.25 = 43,605.54/x
  3. Step 3: Cross multiply
    118,432.86x = 177,719.25 × 43,605.54
  4. Step 4: Simplify right side
    118,432.86x = 7,749,543,864.65
  5. Step 5: Solve for x
    x = 7,749,543,864.65/118,432.86
  6. Step 6: Final answer
    x = 65,434.07

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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.