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Finding the Fourth Proportional to 322,418.70, 483,632.10 and 97,781.40

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Solution

The fourth proportional to 322,418.70, 483,632.10 and 97,781.40 is: 146,673.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,418.70 : 483,632.10 = 97,781.40 : x
  2. Step 2: Convert to fraction form
    322,418.70/483,632.10 = 97,781.40/x
  3. Step 3: Cross multiply
    322,418.70x = 483,632.10 × 97,781.40
  4. Step 4: Simplify right side
    322,418.70x = 47,290,223,822.94
  5. Step 5: Solve for x
    x = 47,290,223,822.94/322,418.70
  6. Step 6: Final answer
    x = 146,673.33

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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.