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Finding the Fourth Proportional to 123,646.80, 185,324.40 and 92,445.60

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Solution

The fourth proportional to 123,646.80, 185,324.40 and 92,445.60 is: 138,559.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,646.80 : 185,324.40 = 92,445.60 : x
  2. Step 2: Convert to fraction form
    123,646.80/185,324.40 = 92,445.60/x
  3. Step 3: Cross multiply
    123,646.80x = 185,324.40 × 92,445.60
  4. Step 4: Simplify right side
    123,646.80x = 17,132,425,352.64
  5. Step 5: Solve for x
    x = 17,132,425,352.64/123,646.80
  6. Step 6: Final answer
    x = 138,559.39

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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.