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Finding the Fourth Proportional to 108,940.40, 162,973.20 and 94,311.80

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Solution

The fourth proportional to 108,940.40, 162,973.20 and 94,311.80 is: 141,089.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,940.40 : 162,973.20 = 94,311.80 : x
  2. Step 2: Convert to fraction form
    108,940.40/162,973.20 = 94,311.80/x
  3. Step 3: Cross multiply
    108,940.40x = 162,973.20 × 94,311.80
  4. Step 4: Simplify right side
    108,940.40x = 15,370,295,843.76
  5. Step 5: Solve for x
    x = 15,370,295,843.76/108,940.40
  6. Step 6: Final answer
    x = 141,089.03

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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.