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Finding the Fourth Proportional to 411,787.04, 567,866.87 and 321,109.92

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Solution

The fourth proportional to 411,787.04, 567,866.87 and 321,109.92 is: 442,820.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,787.04 : 567,866.87 = 321,109.92 : x
  2. Step 2: Convert to fraction form
    411,787.04/567,866.87 = 321,109.92/x
  3. Step 3: Cross multiply
    411,787.04x = 567,866.87 × 321,109.92
  4. Step 4: Simplify right side
    411,787.04x = 182,347,683,590.80
  5. Step 5: Solve for x
    x = 182,347,683,590.80/411,787.04
  6. Step 6: Final answer
    x = 442,820.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.