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Finding the Fourth Proportional to 393,506.55, 589,968.23 and 168,682.95

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Solution

The fourth proportional to 393,506.55, 589,968.23 and 168,682.95 is: 252,899.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,506.55 : 589,968.23 = 168,682.95 : x
  2. Step 2: Convert to fraction form
    393,506.55/589,968.23 = 168,682.95/x
  3. Step 3: Cross multiply
    393,506.55x = 589,968.23 × 168,682.95
  4. Step 4: Simplify right side
    393,506.55x = 99,517,580,599.26
  5. Step 5: Solve for x
    x = 99,517,580,599.26/393,506.55
  6. Step 6: Final answer
    x = 252,899.43

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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.