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Finding the Fourth Proportional to 38,467.80, 57,701.70 and 12,180.60

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Solution

The fourth proportional to 38,467.80, 57,701.70 and 12,180.60 is: 18,270.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,467.80 : 57,701.70 = 12,180.60 : x
  2. Step 2: Convert to fraction form
    38,467.80/57,701.70 = 12,180.60/x
  3. Step 3: Cross multiply
    38,467.80x = 57,701.70 × 12,180.60
  4. Step 4: Simplify right side
    38,467.80x = 702,841,327.02
  5. Step 5: Solve for x
    x = 702,841,327.02/38,467.80
  6. Step 6: Final answer
    x = 18,270.90

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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.