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Finding the Fourth Proportional to 118,470.25, 177,736.49 and 42,576.45

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Solution

The fourth proportional to 118,470.25, 177,736.49 and 42,576.45 is: 63,875.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,470.25 : 177,736.49 = 42,576.45 : x
  2. Step 2: Convert to fraction form
    118,470.25/177,736.49 = 42,576.45/x
  3. Step 3: Cross multiply
    118,470.25x = 177,736.49 × 42,576.45
  4. Step 4: Simplify right side
    118,470.25x = 7,567,388,441.76
  5. Step 5: Solve for x
    x = 7,567,388,441.76/118,470.25
  6. Step 6: Final answer
    x = 63,875.86

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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.