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Finding the Fourth Proportional to 37,620.80, 56,431.20 and 35,316.80

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Solution

The fourth proportional to 37,620.80, 56,431.20 and 35,316.80 is: 52,975.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,620.80 : 56,431.20 = 35,316.80 : x
  2. Step 2: Convert to fraction form
    37,620.80/56,431.20 = 35,316.80/x
  3. Step 3: Cross multiply
    37,620.80x = 56,431.20 × 35,316.80
  4. Step 4: Simplify right side
    37,620.80x = 1,992,969,404.16
  5. Step 5: Solve for x
    x = 1,992,969,404.16/37,620.80
  6. Step 6: Final answer
    x = 52,975.20

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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.