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Finding the Fourth Proportional to 336,422.26, 504,730.78 and 99,770.64

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Solution

The fourth proportional to 336,422.26, 504,730.78 and 99,770.64 is: 149,684.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,422.26 : 504,730.78 = 99,770.64 : x
  2. Step 2: Convert to fraction form
    336,422.26/504,730.78 = 99,770.64/x
  3. Step 3: Cross multiply
    336,422.26x = 504,730.78 × 99,770.64
  4. Step 4: Simplify right side
    336,422.26x = 50,357,312,948.30
  5. Step 5: Solve for x
    x = 50,357,312,948.30/336,422.26
  6. Step 6: Final answer
    x = 149,684.84

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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.