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Finding the Fourth Proportional to 6,242,431.60, 8,728,206.80 and 6,242,431.60

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Solution

The fourth proportional to 6,242,431.60, 8,728,206.80 and 6,242,431.60 is: 8,728,206.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,242,431.60 : 8,728,206.80 = 6,242,431.60 : x
  2. Step 2: Convert to fraction form
    6,242,431.60/8,728,206.80 = 6,242,431.60/x
  3. Step 3: Cross multiply
    6,242,431.60x = 8,728,206.80 × 6,242,431.60
  4. Step 4: Simplify right side
    6,242,431.60x = 54,485,233,939,654.88
  5. Step 5: Solve for x
    x = 54,485,233,939,654.88/6,242,431.60
  6. Step 6: Final answer
    x = 8,728,206.80

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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 (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.