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Finding the Fourth Proportional to 393,611.94, 587,346.84 and 351,200.34

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Solution

The fourth proportional to 393,611.94, 587,346.84 and 351,200.34 is: 524,060.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,611.94 : 587,346.84 = 351,200.34 : x
  2. Step 2: Convert to fraction form
    393,611.94/587,346.84 = 351,200.34/x
  3. Step 3: Cross multiply
    393,611.94x = 587,346.84 × 351,200.34
  4. Step 4: Simplify right side
    393,611.94x = 206,276,409,905.93
  5. Step 5: Solve for x
    x = 206,276,409,905.93/393,611.94
  6. Step 6: Final answer
    x = 524,060.35

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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.