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Finding the Fourth Proportional to 598,930.80, 898,396.20 and 386,354.40

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Solution

The fourth proportional to 598,930.80, 898,396.20 and 386,354.40 is: 579,531.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    598,930.80 : 898,396.20 = 386,354.40 : x
  2. Step 2: Convert to fraction form
    598,930.80/898,396.20 = 386,354.40/x
  3. Step 3: Cross multiply
    598,930.80x = 898,396.20 × 386,354.40
  4. Step 4: Simplify right side
    598,930.80x = 347,099,324,813.28
  5. Step 5: Solve for x
    x = 347,099,324,813.28/598,930.80
  6. Step 6: Final answer
    x = 579,531.60

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Similar ratio
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1.5x scale

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.