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Finding the Fourth Proportional to 343,028.40, 514,542.60 and 156,039.90

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Solution

The fourth proportional to 343,028.40, 514,542.60 and 156,039.90 is: 234,059.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,028.40 : 514,542.60 = 156,039.90 : x
  2. Step 2: Convert to fraction form
    343,028.40/514,542.60 = 156,039.90/x
  3. Step 3: Cross multiply
    343,028.40x = 514,542.60 × 156,039.90
  4. Step 4: Simplify right side
    343,028.40x = 80,289,175,849.74
  5. Step 5: Solve for x
    x = 80,289,175,849.74/343,028.40
  6. Step 6: Final answer
    x = 234,059.85

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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.