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Finding the Fourth Proportional to 14,608.40, 21,912.60 and 11,692.40

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Solution

The fourth proportional to 14,608.40, 21,912.60 and 11,692.40 is: 17,538.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,608.40 : 21,912.60 = 11,692.40 : x
  2. Step 2: Convert to fraction form
    14,608.40/21,912.60 = 11,692.40/x
  3. Step 3: Cross multiply
    14,608.40x = 21,912.60 × 11,692.40
  4. Step 4: Simplify right side
    14,608.40x = 256,210,884.24
  5. Step 5: Solve for x
    x = 256,210,884.24/14,608.40
  6. Step 6: Final answer
    x = 17,538.60

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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.