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Finding the Fourth Proportional to 336,421.26, 504,729.28 and 99,769.64

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Solution

The fourth proportional to 336,421.26, 504,729.28 and 99,769.64 is: 149,683.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,421.26 : 504,729.28 = 99,769.64 : x
  2. Step 2: Convert to fraction form
    336,421.26/504,729.28 = 99,769.64/x
  3. Step 3: Cross multiply
    336,421.26x = 504,729.28 × 99,769.64
  4. Step 4: Simplify right side
    336,421.26x = 50,356,658,563.06
  5. Step 5: Solve for x
    x = 50,356,658,563.06/336,421.26
  6. Step 6: Final answer
    x = 149,683.34

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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.