Home / 18,885,760.40-28,328,640.60-17,311,120.40

Finding the Fourth Proportional to 18,885,760.40, 28,328,640.60 and 17,311,120.40

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Solution

The fourth proportional to 18,885,760.40, 28,328,640.60 and 17,311,120.40 is: 25,966,680.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,885,760.40 : 28,328,640.60 = 17,311,120.40 : x
  2. Step 2: Convert to fraction form
    18,885,760.40/28,328,640.60 = 17,311,120.40/x
  3. Step 3: Cross multiply
    18,885,760.40x = 28,328,640.60 × 17,311,120.40
  4. Step 4: Simplify right side
    18,885,760.40x = 490,400,508,194,928.25
  5. Step 5: Solve for x
    x = 490,400,508,194,928.25/18,885,760.40
  6. Step 6: Final answer
    x = 25,966,680.60

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Similar ratio
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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.