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Finding the Fourth Proportional to 394,341.10, 591,511.65 and 350,017.90

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Solution

The fourth proportional to 394,341.10, 591,511.65 and 350,017.90 is: 525,026.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,341.10 : 591,511.65 = 350,017.90 : x
  2. Step 2: Convert to fraction form
    394,341.10/591,511.65 = 350,017.90/x
  3. Step 3: Cross multiply
    394,341.10x = 591,511.65 × 350,017.90
  4. Step 4: Simplify right side
    394,341.10x = 207,039,665,558.54
  5. Step 5: Solve for x
    x = 207,039,665,558.54/394,341.10
  6. Step 6: Final answer
    x = 525,026.85

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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.