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Finding the Fourth Proportional to 539,920.60, 809,880.90 and 434,944.60

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Solution

The fourth proportional to 539,920.60, 809,880.90 and 434,944.60 is: 652,416.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,920.60 : 809,880.90 = 434,944.60 : x
  2. Step 2: Convert to fraction form
    539,920.60/809,880.90 = 434,944.60/x
  3. Step 3: Cross multiply
    539,920.60x = 809,880.90 × 434,944.60
  4. Step 4: Simplify right side
    539,920.60x = 352,253,324,098.14
  5. Step 5: Solve for x
    x = 352,253,324,098.14/539,920.60
  6. Step 6: Final answer
    x = 652,416.90

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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.