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Finding the Fourth Proportional to 118,112.19, 177,270.65 and 61,991.94

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Solution

The fourth proportional to 118,112.19, 177,270.65 and 61,991.94 is: 93,041.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,112.19 : 177,270.65 = 61,991.94 : x
  2. Step 2: Convert to fraction form
    118,112.19/177,270.65 = 61,991.94/x
  3. Step 3: Cross multiply
    118,112.19x = 177,270.65 × 61,991.94
  4. Step 4: Simplify right side
    118,112.19x = 10,989,351,498.56
  5. Step 5: Solve for x
    x = 10,989,351,498.56/118,112.19
  6. Step 6: Final answer
    x = 93,041.64

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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.