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Finding the Fourth Proportional to 289,772.20, 434,658.30 and 264,111.40

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Solution

The fourth proportional to 289,772.20, 434,658.30 and 264,111.40 is: 396,167.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,772.20 : 434,658.30 = 264,111.40 : x
  2. Step 2: Convert to fraction form
    289,772.20/434,658.30 = 264,111.40/x
  3. Step 3: Cross multiply
    289,772.20x = 434,658.30 × 264,111.40
  4. Step 4: Simplify right side
    289,772.20x = 114,798,212,134.62
  5. Step 5: Solve for x
    x = 114,798,212,134.62/289,772.20
  6. Step 6: Final answer
    x = 396,167.10

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.