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Finding the Fourth Proportional to 539,411.67, 809,257.64 and 443,507.00

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Solution

The fourth proportional to 539,411.67, 809,257.64 and 443,507.00 is: 665,375.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,411.67 : 809,257.64 = 443,507.00 : x
  2. Step 2: Convert to fraction form
    539,411.67/809,257.64 = 443,507.00/x
  3. Step 3: Cross multiply
    539,411.67x = 809,257.64 × 443,507.00
  4. Step 4: Simplify right side
    539,411.67x = 358,911,421,879.66
  5. Step 5: Solve for x
    x = 358,911,421,879.66/539,411.67
  6. Step 6: Final answer
    x = 665,375.71

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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.