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Finding the Fourth Proportional to 361,885.70, 542,828.55 and 328,643.30

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Solution

The fourth proportional to 361,885.70, 542,828.55 and 328,643.30 is: 492,964.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,885.70 : 542,828.55 = 328,643.30 : x
  2. Step 2: Convert to fraction form
    361,885.70/542,828.55 = 328,643.30/x
  3. Step 3: Cross multiply
    361,885.70x = 542,828.55 × 328,643.30
  4. Step 4: Simplify right side
    361,885.70x = 178,396,966,006.22
  5. Step 5: Solve for x
    x = 178,396,966,006.22/361,885.70
  6. Step 6: Final answer
    x = 492,964.95

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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.