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Finding the Fourth Proportional to 17,177,011.20, 25,765,516.80 and 8,219,059.20

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Solution

The fourth proportional to 17,177,011.20, 25,765,516.80 and 8,219,059.20 is: 12,328,588.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,177,011.20 : 25,765,516.80 = 8,219,059.20 : x
  2. Step 2: Convert to fraction form
    17,177,011.20/25,765,516.80 = 8,219,059.20/x
  3. Step 3: Cross multiply
    17,177,011.20x = 25,765,516.80 × 8,219,059.20
  4. Step 4: Simplify right side
    17,177,011.20x = 211,768,307,897,794.56
  5. Step 5: Solve for x
    x = 211,768,307,897,794.56/17,177,011.20
  6. Step 6: Final answer
    x = 12,328,588.80

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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.