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Finding the Fourth Proportional to 48,534.72, 66,933.60 and 30,609.60

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Solution

The fourth proportional to 48,534.72, 66,933.60 and 30,609.60 is: 42,213.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,534.72 : 66,933.60 = 30,609.60 : x
  2. Step 2: Convert to fraction form
    48,534.72/66,933.60 = 30,609.60/x
  3. Step 3: Cross multiply
    48,534.72x = 66,933.60 × 30,609.60
  4. Step 4: Simplify right side
    48,534.72x = 2,048,810,722.56
  5. Step 5: Solve for x
    x = 2,048,810,722.56/48,534.72
  6. Step 6: Final answer
    x = 42,213.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.