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Finding the Fourth Proportional to 118,164.96, 177,326.21 and 61,291.28

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Solution

The fourth proportional to 118,164.96, 177,326.21 and 61,291.28 is: 91,977.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,164.96 : 177,326.21 = 61,291.28 : x
  2. Step 2: Convert to fraction form
    118,164.96/177,326.21 = 61,291.28/x
  3. Step 3: Cross multiply
    118,164.96x = 177,326.21 × 61,291.28
  4. Step 4: Simplify right side
    118,164.96x = 10,868,550,984.99
  5. Step 5: Solve for x
    x = 10,868,550,984.99/118,164.96
  6. Step 6: Final answer
    x = 91,977.78

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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.