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Finding the Fourth Proportional to 18,457.92, 25,471.84 and 10,074.40

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Solution

The fourth proportional to 18,457.92, 25,471.84 and 10,074.40 is: 13,902.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,457.92 : 25,471.84 = 10,074.40 : x
  2. Step 2: Convert to fraction form
    18,457.92/25,471.84 = 10,074.40/x
  3. Step 3: Cross multiply
    18,457.92x = 25,471.84 × 10,074.40
  4. Step 4: Simplify right side
    18,457.92x = 256,613,504.90
  5. Step 5: Solve for x
    x = 256,613,504.90/18,457.92
  6. Step 6: Final answer
    x = 13,902.62

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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.