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Finding the Fourth Proportional to 274,245.40, 411,368.10 and 168,722.20

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Solution

The fourth proportional to 274,245.40, 411,368.10 and 168,722.20 is: 253,083.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,245.40 : 411,368.10 = 168,722.20 : x
  2. Step 2: Convert to fraction form
    274,245.40/411,368.10 = 168,722.20/x
  3. Step 3: Cross multiply
    274,245.40x = 411,368.10 × 168,722.20
  4. Step 4: Simplify right side
    274,245.40x = 69,406,930,841.82
  5. Step 5: Solve for x
    x = 69,406,930,841.82/274,245.40
  6. Step 6: Final answer
    x = 253,083.30

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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.