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Finding the Fourth Proportional to 82,846.80, 124,270.20 and 47,757.60

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Solution

The fourth proportional to 82,846.80, 124,270.20 and 47,757.60 is: 71,636.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,846.80 : 124,270.20 = 47,757.60 : x
  2. Step 2: Convert to fraction form
    82,846.80/124,270.20 = 47,757.60/x
  3. Step 3: Cross multiply
    82,846.80x = 124,270.20 × 47,757.60
  4. Step 4: Simplify right side
    82,846.80x = 5,934,846,503.52
  5. Step 5: Solve for x
    x = 5,934,846,503.52/82,846.80
  6. Step 6: Final answer
    x = 71,636.40

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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.