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Finding the Fourth Proportional to 505,761.87, 758,755.80 and 190,221.51

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Solution

The fourth proportional to 505,761.87, 758,755.80 and 190,221.51 is: 285,374.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,761.87 : 758,755.80 = 190,221.51 : x
  2. Step 2: Convert to fraction form
    505,761.87/758,755.80 = 190,221.51/x
  3. Step 3: Cross multiply
    505,761.87x = 758,755.80 × 190,221.51
  4. Step 4: Simplify right side
    505,761.87x = 144,331,673,997.26
  5. Step 5: Solve for x
    x = 144,331,673,997.26/505,761.87
  6. Step 6: Final answer
    x = 285,374.76

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1.5x scale

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.