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Finding the Fourth Proportional to 393,509.96, 587,195.95 and 351,098.57

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Solution

The fourth proportional to 393,509.96, 587,195.95 and 351,098.57 is: 523,909.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,509.96 : 587,195.95 = 351,098.57 : x
  2. Step 2: Convert to fraction form
    393,509.96/587,195.95 = 351,098.57/x
  3. Step 3: Cross multiply
    393,509.96x = 587,195.95 × 351,098.57
  4. Step 4: Simplify right side
    393,509.96x = 206,163,656,300.37
  5. Step 5: Solve for x
    x = 206,163,656,300.37/393,509.96
  6. Step 6: Final answer
    x = 523,909.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.