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Finding the Fourth Proportional to 82,370.80, 123,556.20 and 54,328.60

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Solution

The fourth proportional to 82,370.80, 123,556.20 and 54,328.60 is: 81,492.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,370.80 : 123,556.20 = 54,328.60 : x
  2. Step 2: Convert to fraction form
    82,370.80/123,556.20 = 54,328.60/x
  3. Step 3: Cross multiply
    82,370.80x = 123,556.20 × 54,328.60
  4. Step 4: Simplify right side
    82,370.80x = 6,712,635,367.32
  5. Step 5: Solve for x
    x = 6,712,635,367.32/82,370.80
  6. Step 6: Final answer
    x = 81,492.90

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.