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Finding the Fourth Proportional to 329,720.80, 494,532.60 and 93,087.40

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Solution

The fourth proportional to 329,720.80, 494,532.60 and 93,087.40 is: 139,617.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,720.80 : 494,532.60 = 93,087.40 : x
  2. Step 2: Convert to fraction form
    329,720.80/494,532.60 = 93,087.40/x
  3. Step 3: Cross multiply
    329,720.80x = 494,532.60 × 93,087.40
  4. Step 4: Simplify right side
    329,720.80x = 46,034,753,949.24
  5. Step 5: Solve for x
    x = 46,034,753,949.24/329,720.80
  6. Step 6: Final answer
    x = 139,617.38

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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.