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Finding the Fourth Proportional to 57,975.49, 87,358.12 and 47,676.21

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Solution

The fourth proportional to 57,975.49, 87,358.12 and 47,676.21 is: 71,839.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,975.49 : 87,358.12 = 47,676.21 : x
  2. Step 2: Convert to fraction form
    57,975.49/87,358.12 = 47,676.21/x
  3. Step 3: Cross multiply
    57,975.49x = 87,358.12 × 47,676.21
  4. Step 4: Simplify right side
    57,975.49x = 4,164,904,074.33
  5. Step 5: Solve for x
    x = 4,164,904,074.33/57,975.49
  6. Step 6: Final answer
    x = 71,839.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.