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Finding the Fourth Proportional to 18,674.66, 25,762.64 and 12,622.96

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Solution

The fourth proportional to 18,674.66, 25,762.64 and 12,622.96 is: 17,414.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,674.66 : 25,762.64 = 12,622.96 : x
  2. Step 2: Convert to fraction form
    18,674.66/25,762.64 = 12,622.96/x
  3. Step 3: Cross multiply
    18,674.66x = 25,762.64 × 12,622.96
  4. Step 4: Simplify right side
    18,674.66x = 325,200,774.21
  5. Step 5: Solve for x
    x = 325,200,774.21/18,674.66
  6. Step 6: Final answer
    x = 17,414.01

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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.