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Finding the Fourth Proportional to 18,412.60, 25,268.09 and 17,246.20

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Solution

The fourth proportional to 18,412.60, 25,268.09 and 17,246.20 is: 23,667.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,412.60 : 25,268.09 = 17,246.20 : x
  2. Step 2: Convert to fraction form
    18,412.60/25,268.09 = 17,246.20/x
  3. Step 3: Cross multiply
    18,412.60x = 25,268.09 × 17,246.20
  4. Step 4: Simplify right side
    18,412.60x = 435,778,533.76
  5. Step 5: Solve for x
    x = 435,778,533.76/18,412.60
  6. Step 6: Final answer
    x = 23,667.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.