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Finding the Fourth Proportional to 26,412.80, 39,640.80 and 25,548.80

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Solution

The fourth proportional to 26,412.80, 39,640.80 and 25,548.80 is: 38,344.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,412.80 : 39,640.80 = 25,548.80 : x
  2. Step 2: Convert to fraction form
    26,412.80/39,640.80 = 25,548.80/x
  3. Step 3: Cross multiply
    26,412.80x = 39,640.80 × 25,548.80
  4. Step 4: Simplify right side
    26,412.80x = 1,012,774,871.04
  5. Step 5: Solve for x
    x = 1,012,774,871.04/26,412.80
  6. Step 6: Final answer
    x = 38,344.09

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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.