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Finding the Fourth Proportional to 505,958.96, 758,938.44 and 190,486.64

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Solution

The fourth proportional to 505,958.96, 758,938.44 and 190,486.64 is: 285,729.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,958.96 : 758,938.44 = 190,486.64 : x
  2. Step 2: Convert to fraction form
    505,958.96/758,938.44 = 190,486.64/x
  3. Step 3: Cross multiply
    505,958.96x = 758,938.44 × 190,486.64
  4. Step 4: Simplify right side
    505,958.96x = 144,567,636,014.11
  5. Step 5: Solve for x
    x = 144,567,636,014.11/505,958.96
  6. Step 6: Final answer
    x = 285,729.96

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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.