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Finding the Fourth Proportional to 313,652.13, 470,480.63 and 76,996.86

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Solution

The fourth proportional to 313,652.13, 470,480.63 and 76,996.86 is: 115,495.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,652.13 : 470,480.63 = 76,996.86 : x
  2. Step 2: Convert to fraction form
    313,652.13/470,480.63 = 76,996.86/x
  3. Step 3: Cross multiply
    313,652.13x = 470,480.63 × 76,996.86
  4. Step 4: Simplify right side
    313,652.13x = 36,225,530,815.84
  5. Step 5: Solve for x
    x = 36,225,530,815.84/313,652.13
  6. Step 6: Final answer
    x = 115,495.89

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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.