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Finding the Fourth Proportional to 318,458.86, 477,719.03 and 116,109.42

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Solution

The fourth proportional to 318,458.86, 477,719.03 and 116,109.42 is: 174,175.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,458.86 : 477,719.03 = 116,109.42 : x
  2. Step 2: Convert to fraction form
    318,458.86/477,719.03 = 116,109.42/x
  3. Step 3: Cross multiply
    318,458.86x = 477,719.03 × 116,109.42
  4. Step 4: Simplify right side
    318,458.86x = 55,467,677,995.09
  5. Step 5: Solve for x
    x = 55,467,677,995.09/318,458.86
  6. Step 6: Final answer
    x = 174,175.33

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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.