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Finding the Fourth Proportional to 18,551.66, 25,601.94 and 13,259.12

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Solution

The fourth proportional to 18,551.66, 25,601.94 and 13,259.12 is: 18,298.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,551.66 : 25,601.94 = 13,259.12 : x
  2. Step 2: Convert to fraction form
    18,551.66/25,601.94 = 13,259.12/x
  3. Step 3: Cross multiply
    18,551.66x = 25,601.94 × 13,259.12
  4. Step 4: Simplify right side
    18,551.66x = 339,459,066.68
  5. Step 5: Solve for x
    x = 339,459,066.68/18,551.66
  6. Step 6: Final answer
    x = 18,298.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.