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Finding the Fourth Proportional to 470,908.20, 706,676.40 and 171,388.70

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Solution

The fourth proportional to 470,908.20, 706,676.40 and 171,388.70 is: 257,197.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,908.20 : 706,676.40 = 171,388.70 : x
  2. Step 2: Convert to fraction form
    470,908.20/706,676.40 = 171,388.70/x
  3. Step 3: Cross multiply
    470,908.20x = 706,676.40 × 171,388.70
  4. Step 4: Simplify right side
    470,908.20x = 121,116,349,516.68
  5. Step 5: Solve for x
    x = 121,116,349,516.68/470,908.20
  6. Step 6: Final answer
    x = 257,197.37

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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.