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Finding the Fourth Proportional to 38,154.40, 57,243.60 and 18,433.60

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Solution

The fourth proportional to 38,154.40, 57,243.60 and 18,433.60 is: 27,656.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,154.40 : 57,243.60 = 18,433.60 : x
  2. Step 2: Convert to fraction form
    38,154.40/57,243.60 = 18,433.60/x
  3. Step 3: Cross multiply
    38,154.40x = 57,243.60 × 18,433.60
  4. Step 4: Simplify right side
    38,154.40x = 1,055,205,624.96
  5. Step 5: Solve for x
    x = 1,055,205,624.96/38,154.40
  6. Step 6: Final answer
    x = 27,656.20

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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.