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Finding the Fourth Proportional to 469,934.80, 704,902.20 and 328,217.20

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Solution

The fourth proportional to 469,934.80, 704,902.20 and 328,217.20 is: 492,325.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,934.80 : 704,902.20 = 328,217.20 : x
  2. Step 2: Convert to fraction form
    469,934.80/704,902.20 = 328,217.20/x
  3. Step 3: Cross multiply
    469,934.80x = 704,902.20 × 328,217.20
  4. Step 4: Simplify right side
    469,934.80x = 231,361,026,357.84
  5. Step 5: Solve for x
    x = 231,361,026,357.84/469,934.80
  6. Step 6: Final answer
    x = 492,325.80

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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.