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Finding the Fourth Proportional to 539,373.20, 809,059.80 and 371,411.60

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Solution

The fourth proportional to 539,373.20, 809,059.80 and 371,411.60 is: 557,117.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,373.20 : 809,059.80 = 371,411.60 : x
  2. Step 2: Convert to fraction form
    539,373.20/809,059.80 = 371,411.60/x
  3. Step 3: Cross multiply
    539,373.20x = 809,059.80 × 371,411.60
  4. Step 4: Simplify right side
    539,373.20x = 300,494,194,813.68
  5. Step 5: Solve for x
    x = 300,494,194,813.68/539,373.20
  6. Step 6: Final answer
    x = 557,117.40

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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.