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Finding the Fourth Proportional to 439,712.40, 659,082.60 and 173,384.40

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Solution

The fourth proportional to 439,712.40, 659,082.60 and 173,384.40 is: 259,884.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,712.40 : 659,082.60 = 173,384.40 : x
  2. Step 2: Convert to fraction form
    439,712.40/659,082.60 = 173,384.40/x
  3. Step 3: Cross multiply
    439,712.40x = 659,082.60 × 173,384.40
  4. Step 4: Simplify right side
    439,712.40x = 114,274,641,151.44
  5. Step 5: Solve for x
    x = 114,274,641,151.44/439,712.40
  6. Step 6: Final answer
    x = 259,884.96

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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.