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Finding the Fourth Proportional to 108,813.44, 162,880.96 and 83,788.48

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Solution

The fourth proportional to 108,813.44, 162,880.96 and 83,788.48 is: 125,421.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,813.44 : 162,880.96 = 83,788.48 : x
  2. Step 2: Convert to fraction form
    108,813.44/162,880.96 = 83,788.48/x
  3. Step 3: Cross multiply
    108,813.44x = 162,880.96 × 83,788.48
  4. Step 4: Simplify right side
    108,813.44x = 13,647,548,059.34
  5. Step 5: Solve for x
    x = 13,647,548,059.34/108,813.44
  6. Step 6: Final answer
    x = 125,421.53

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1.5x scale

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.