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Finding the Fourth Proportional to 338,650.34, 507,975.48 and 113,991.92

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Solution

The fourth proportional to 338,650.34, 507,975.48 and 113,991.92 is: 170,987.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,650.34 : 507,975.48 = 113,991.92 : x
  2. Step 2: Convert to fraction form
    338,650.34/507,975.48 = 113,991.92/x
  3. Step 3: Cross multiply
    338,650.34x = 507,975.48 × 113,991.92
  4. Step 4: Simplify right side
    338,650.34x = 57,905,100,278.12
  5. Step 5: Solve for x
    x = 57,905,100,278.12/338,650.34
  6. Step 6: Final answer
    x = 170,987.87

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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.