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Finding the Fourth Proportional to 519,470.40, 779,205.60 and 436,801.80

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Solution

The fourth proportional to 519,470.40, 779,205.60 and 436,801.80 is: 655,202.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,470.40 : 779,205.60 = 436,801.80 : x
  2. Step 2: Convert to fraction form
    519,470.40/779,205.60 = 436,801.80/x
  3. Step 3: Cross multiply
    519,470.40x = 779,205.60 × 436,801.80
  4. Step 4: Simplify right side
    519,470.40x = 340,358,408,650.08
  5. Step 5: Solve for x
    x = 340,358,408,650.08/519,470.40
  6. Step 6: Final answer
    x = 655,202.70

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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.