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Finding the Fourth Proportional to 40,661.81, 60,968.62 and 12,573.55

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Solution

The fourth proportional to 40,661.81, 60,968.62 and 12,573.55 is: 18,852.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,661.81 : 60,968.62 = 12,573.55 : x
  2. Step 2: Convert to fraction form
    40,661.81/60,968.62 = 12,573.55/x
  3. Step 3: Cross multiply
    40,661.81x = 60,968.62 × 12,573.55
  4. Step 4: Simplify right side
    40,661.81x = 766,591,992.00
  5. Step 5: Solve for x
    x = 766,591,992.00/40,661.81
  6. Step 6: Final answer
    x = 18,852.87

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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.