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Finding the Fourth Proportional to 313,397.80, 470,172.30 and 103,024.60

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Solution

The fourth proportional to 313,397.80, 470,172.30 and 103,024.60 is: 154,561.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,397.80 : 470,172.30 = 103,024.60 : x
  2. Step 2: Convert to fraction form
    313,397.80/470,172.30 = 103,024.60/x
  3. Step 3: Cross multiply
    313,397.80x = 470,172.30 × 103,024.60
  4. Step 4: Simplify right side
    313,397.80x = 48,439,313,138.58
  5. Step 5: Solve for x
    x = 48,439,313,138.58/313,397.80
  6. Step 6: Final answer
    x = 154,561.75

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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.