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Finding the Fourth Proportional to 314,116.20, 470,396.70 and 251,908.20

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Solution

The fourth proportional to 314,116.20, 470,396.70 and 251,908.20 is: 377,238.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,116.20 : 470,396.70 = 251,908.20 : x
  2. Step 2: Convert to fraction form
    314,116.20/470,396.70 = 251,908.20/x
  3. Step 3: Cross multiply
    314,116.20x = 470,396.70 × 251,908.20
  4. Step 4: Simplify right side
    314,116.20x = 118,496,785,982.94
  5. Step 5: Solve for x
    x = 118,496,785,982.94/314,116.20
  6. Step 6: Final answer
    x = 377,238.70

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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.