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Finding the Fourth Proportional to 327,082.40, 490,639.80 and 169,618.40

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Solution

The fourth proportional to 327,082.40, 490,639.80 and 169,618.40 is: 254,436.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,082.40 : 490,639.80 = 169,618.40 : x
  2. Step 2: Convert to fraction form
    327,082.40/490,639.80 = 169,618.40/x
  3. Step 3: Cross multiply
    327,082.40x = 490,639.80 × 169,618.40
  4. Step 4: Simplify right side
    327,082.40x = 83,221,537,852.32
  5. Step 5: Solve for x
    x = 83,221,537,852.32/327,082.40
  6. Step 6: Final answer
    x = 254,436.00

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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.