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Finding the Fourth Proportional to 318,126.64, 477,253.14 and 118,448.68

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Solution

The fourth proportional to 318,126.64, 477,253.14 and 118,448.68 is: 177,696.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,126.64 : 477,253.14 = 118,448.68 : x
  2. Step 2: Convert to fraction form
    318,126.64/477,253.14 = 118,448.68/x
  3. Step 3: Cross multiply
    318,126.64x = 477,253.14 × 118,448.68
  4. Step 4: Simplify right side
    318,126.64x = 56,530,004,458.86
  5. Step 5: Solve for x
    x = 56,530,004,458.86/318,126.64
  6. Step 6: Final answer
    x = 177,696.54

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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.