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Finding the Fourth Proportional to 470,512.16, 705,781.20 and 115,524.80

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Solution

The fourth proportional to 470,512.16, 705,781.20 and 115,524.80 is: 173,290.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,512.16 : 705,781.20 = 115,524.80 : x
  2. Step 2: Convert to fraction form
    470,512.16/705,781.20 = 115,524.80/x
  3. Step 3: Cross multiply
    470,512.16x = 705,781.20 × 115,524.80
  4. Step 4: Simplify right side
    470,512.16x = 81,535,231,973.76
  5. Step 5: Solve for x
    x = 81,535,231,973.76/470,512.16
  6. Step 6: Final answer
    x = 173,290.38

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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.