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Finding the Fourth Proportional to 274,322.40, 411,483.60 and 168,799.20

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Solution

The fourth proportional to 274,322.40, 411,483.60 and 168,799.20 is: 253,198.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,322.40 : 411,483.60 = 168,799.20 : x
  2. Step 2: Convert to fraction form
    274,322.40/411,483.60 = 168,799.20/x
  3. Step 3: Cross multiply
    274,322.40x = 411,483.60 × 168,799.20
  4. Step 4: Simplify right side
    274,322.40x = 69,458,102,493.12
  5. Step 5: Solve for x
    x = 69,458,102,493.12/274,322.40
  6. Step 6: Final answer
    x = 253,198.80

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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.