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Finding the Fourth Proportional to 605,170.71, 834,705.81 and 398,188.59

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Solution

The fourth proportional to 605,170.71, 834,705.81 and 398,188.59 is: 549,217.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,170.71 : 834,705.81 = 398,188.59 : x
  2. Step 2: Convert to fraction form
    605,170.71/834,705.81 = 398,188.59/x
  3. Step 3: Cross multiply
    605,170.71x = 834,705.81 × 398,188.59
  4. Step 4: Simplify right side
    605,170.71x = 332,370,329,548.71
  5. Step 5: Solve for x
    x = 332,370,329,548.71/605,170.71
  6. Step 6: Final answer
    x = 549,217.48

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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.