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Finding the Fourth Proportional to 28,608.60, 42,912.90 and 23,748.60

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Solution

The fourth proportional to 28,608.60, 42,912.90 and 23,748.60 is: 35,622.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,608.60 : 42,912.90 = 23,748.60 : x
  2. Step 2: Convert to fraction form
    28,608.60/42,912.90 = 23,748.60/x
  3. Step 3: Cross multiply
    28,608.60x = 42,912.90 × 23,748.60
  4. Step 4: Simplify right side
    28,608.60x = 1,019,121,296.94
  5. Step 5: Solve for x
    x = 1,019,121,296.94/28,608.60
  6. Step 6: Final answer
    x = 35,622.90

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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.