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Finding the Fourth Proportional to 393,373.40, 589,622.70 and 168,695.60

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Solution

The fourth proportional to 393,373.40, 589,622.70 and 168,695.60 is: 252,855.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,373.40 : 589,622.70 = 168,695.60 : x
  2. Step 2: Convert to fraction form
    393,373.40/589,622.70 = 168,695.60/x
  3. Step 3: Cross multiply
    393,373.40x = 589,622.70 × 168,695.60
  4. Step 4: Simplify right side
    393,373.40x = 99,466,755,150.12
  5. Step 5: Solve for x
    x = 99,466,755,150.12/393,373.40
  6. Step 6: Final answer
    x = 252,855.82

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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.