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Finding the Fourth Proportional to 108,696.40, 163,044.60 and 82,452.40

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Solution

The fourth proportional to 108,696.40, 163,044.60 and 82,452.40 is: 123,678.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,696.40 : 163,044.60 = 82,452.40 : x
  2. Step 2: Convert to fraction form
    108,696.40/163,044.60 = 82,452.40/x
  3. Step 3: Cross multiply
    108,696.40x = 163,044.60 × 82,452.40
  4. Step 4: Simplify right side
    108,696.40x = 13,443,418,577.04
  5. Step 5: Solve for x
    x = 13,443,418,577.04/108,696.40
  6. Step 6: Final answer
    x = 123,678.60

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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.