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Finding the Fourth Proportional to 432,847.70, 649,271.55 and 273,415.40

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Solution

The fourth proportional to 432,847.70, 649,271.55 and 273,415.40 is: 410,123.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,847.70 : 649,271.55 = 273,415.40 : x
  2. Step 2: Convert to fraction form
    432,847.70/649,271.55 = 273,415.40/x
  3. Step 3: Cross multiply
    432,847.70x = 649,271.55 × 273,415.40
  4. Step 4: Simplify right side
    432,847.70x = 177,520,840,551.87
  5. Step 5: Solve for x
    x = 177,520,840,551.87/432,847.70
  6. Step 6: Final answer
    x = 410,123.10

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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.