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Finding the Fourth Proportional to 470,936.70, 706,145.85 and 155,231.10

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Solution

The fourth proportional to 470,936.70, 706,145.85 and 155,231.10 is: 232,761.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,936.70 : 706,145.85 = 155,231.10 : x
  2. Step 2: Convert to fraction form
    470,936.70/706,145.85 = 155,231.10/x
  3. Step 3: Cross multiply
    470,936.70x = 706,145.85 × 155,231.10
  4. Step 4: Simplify right side
    470,936.70x = 109,615,797,055.94
  5. Step 5: Solve for x
    x = 109,615,797,055.94/470,936.70
  6. Step 6: Final answer
    x = 232,761.21

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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.