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Finding the Fourth Proportional to 392,357.49, 587,006.60 and 343,941.76

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Solution

The fourth proportional to 392,357.49, 587,006.60 and 343,941.76 is: 514,571.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,357.49 : 587,006.60 = 343,941.76 : x
  2. Step 2: Convert to fraction form
    392,357.49/587,006.60 = 343,941.76/x
  3. Step 3: Cross multiply
    392,357.49x = 587,006.60 × 343,941.76
  4. Step 4: Simplify right side
    392,357.49x = 201,896,082,149.67
  5. Step 5: Solve for x
    x = 201,896,082,149.67/392,357.49
  6. Step 6: Final answer
    x = 514,571.76

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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.