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Finding the Fourth Proportional to 936,019.20, 1,404,028.80 and 768,057.60

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Solution

The fourth proportional to 936,019.20, 1,404,028.80 and 768,057.60 is: 1,152,086.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    936,019.20 : 1,404,028.80 = 768,057.60 : x
  2. Step 2: Convert to fraction form
    936,019.20/1,404,028.80 = 768,057.60/x
  3. Step 3: Cross multiply
    936,019.20x = 1,404,028.80 × 768,057.60
  4. Step 4: Simplify right side
    936,019.20x = 1,078,374,990,458.88
  5. Step 5: Solve for x
    x = 1,078,374,990,458.88/936,019.20
  6. Step 6: Final answer
    x = 1,152,086.40

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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.