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Finding the Fourth Proportional to 43,078.72, 64,605.60 and 16,777.60

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Solution

The fourth proportional to 43,078.72, 64,605.60 and 16,777.60 is: 25,161.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,078.72 : 64,605.60 = 16,777.60 : x
  2. Step 2: Convert to fraction form
    43,078.72/64,605.60 = 16,777.60/x
  3. Step 3: Cross multiply
    43,078.72x = 64,605.60 × 16,777.60
  4. Step 4: Simplify right side
    43,078.72x = 1,083,926,914.56
  5. Step 5: Solve for x
    x = 1,083,926,914.56/43,078.72
  6. Step 6: Final answer
    x = 25,161.54

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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.