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Finding the Fourth Proportional to 313,367.80, 470,051.70 and 251,159.80

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Solution

The fourth proportional to 313,367.80, 470,051.70 and 251,159.80 is: 376,739.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,367.80 : 470,051.70 = 251,159.80 : x
  2. Step 2: Convert to fraction form
    313,367.80/470,051.70 = 251,159.80/x
  3. Step 3: Cross multiply
    313,367.80x = 470,051.70 × 251,159.80
  4. Step 4: Simplify right side
    313,367.80x = 118,058,090,961.66
  5. Step 5: Solve for x
    x = 118,058,090,961.66/313,367.80
  6. Step 6: Final answer
    x = 376,739.70

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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.