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Finding the Fourth Proportional to 352,064.20, 528,096.30 and 321,651.40

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Solution

The fourth proportional to 352,064.20, 528,096.30 and 321,651.40 is: 482,477.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,064.20 : 528,096.30 = 321,651.40 : x
  2. Step 2: Convert to fraction form
    352,064.20/528,096.30 = 321,651.40/x
  3. Step 3: Cross multiply
    352,064.20x = 528,096.30 × 321,651.40
  4. Step 4: Simplify right side
    352,064.20x = 169,862,914,229.82
  5. Step 5: Solve for x
    x = 169,862,914,229.82/352,064.20
  6. Step 6: Final answer
    x = 482,477.10

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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.