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Finding the Fourth Proportional to 313,967.80, 470,949.54 and 103,622.68

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Solution

The fourth proportional to 313,967.80, 470,949.54 and 103,622.68 is: 155,433.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,967.80 : 470,949.54 = 103,622.68 : x
  2. Step 2: Convert to fraction form
    313,967.80/470,949.54 = 103,622.68/x
  3. Step 3: Cross multiply
    313,967.80x = 470,949.54 × 103,622.68
  4. Step 4: Simplify right side
    313,967.80x = 48,801,053,479.57
  5. Step 5: Solve for x
    x = 48,801,053,479.57/313,967.80
  6. Step 6: Final answer
    x = 155,433.31

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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.