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Finding the Fourth Proportional to 354,879.81, 531,876.75 and 177,437.58

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Solution

The fourth proportional to 354,879.81, 531,876.75 and 177,437.58 is: 265,934.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,879.81 : 531,876.75 = 177,437.58 : x
  2. Step 2: Convert to fraction form
    354,879.81/531,876.75 = 177,437.58/x
  3. Step 3: Cross multiply
    354,879.81x = 531,876.75 × 177,437.58
  4. Step 4: Simplify right side
    354,879.81x = 94,374,923,378.27
  5. Step 5: Solve for x
    x = 94,374,923,378.27/354,879.81
  6. Step 6: Final answer
    x = 265,934.89

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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.