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Finding the Fourth Proportional to 117,539.81, 176,308.50 and 28,793.78

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Solution

The fourth proportional to 117,539.81, 176,308.50 and 28,793.78 is: 43,190.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,539.81 : 176,308.50 = 28,793.78 : x
  2. Step 2: Convert to fraction form
    117,539.81/176,308.50 = 28,793.78/x
  3. Step 3: Cross multiply
    117,539.81x = 176,308.50 × 28,793.78
  4. Step 4: Simplify right side
    117,539.81x = 5,076,588,161.13
  5. Step 5: Solve for x
    x = 5,076,588,161.13/117,539.81
  6. Step 6: Final answer
    x = 43,190.37

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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.