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Finding the Fourth Proportional to 620,109.80, 930,164.70 and 441,650.60

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Solution

The fourth proportional to 620,109.80, 930,164.70 and 441,650.60 is: 662,475.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,109.80 : 930,164.70 = 441,650.60 : x
  2. Step 2: Convert to fraction form
    620,109.80/930,164.70 = 441,650.60/x
  3. Step 3: Cross multiply
    620,109.80x = 930,164.70 × 441,650.60
  4. Step 4: Simplify right side
    620,109.80x = 410,807,797,853.82
  5. Step 5: Solve for x
    x = 410,807,797,853.82/620,109.80
  6. Step 6: Final answer
    x = 662,475.90

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Double scale
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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.