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Finding the Fourth Proportional to 32,912.64, 49,372.80 and 20,601.60

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Solution

The fourth proportional to 32,912.64, 49,372.80 and 20,601.60 is: 30,904.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,912.64 : 49,372.80 = 20,601.60 : x
  2. Step 2: Convert to fraction form
    32,912.64/49,372.80 = 20,601.60/x
  3. Step 3: Cross multiply
    32,912.64x = 49,372.80 × 20,601.60
  4. Step 4: Simplify right side
    32,912.64x = 1,017,158,676.48
  5. Step 5: Solve for x
    x = 1,017,158,676.48/32,912.64
  6. Step 6: Final answer
    x = 30,904.80

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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.