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Finding the Fourth Proportional to 438,910.85, 605,958 and 277,903.91

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Solution

The fourth proportional to 438,910.85, 605,958 and 277,903.91 is: 383,672.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,910.85 : 605,958 = 277,903.91 : x
  2. Step 2: Convert to fraction form
    438,910.85/605,958 = 277,903.91/x
  3. Step 3: Cross multiply
    438,910.85x = 605,958 × 277,903.91
  4. Step 4: Simplify right side
    438,910.85x = 168,398,094,465.99
  5. Step 5: Solve for x
    x = 168,398,094,465.99/438,910.85
  6. Step 6: Final answer
    x = 383,672.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.