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Finding the Fourth Proportional to 18,460.40, 27,690.60 and 16,613.60

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Solution

The fourth proportional to 18,460.40, 27,690.60 and 16,613.60 is: 24,920.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,460.40 : 27,690.60 = 16,613.60 : x
  2. Step 2: Convert to fraction form
    18,460.40/27,690.60 = 16,613.60/x
  3. Step 3: Cross multiply
    18,460.40x = 27,690.60 × 16,613.60
  4. Step 4: Simplify right side
    18,460.40x = 460,040,552.16
  5. Step 5: Solve for x
    x = 460,040,552.16/18,460.40
  6. Step 6: Final answer
    x = 24,920.40

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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.