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Finding the Fourth Proportional to 336,020.80, 504,020.40 and 111,391.60

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Solution

The fourth proportional to 336,020.80, 504,020.40 and 111,391.60 is: 167,083.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,020.80 : 504,020.40 = 111,391.60 : x
  2. Step 2: Convert to fraction form
    336,020.80/504,020.40 = 111,391.60/x
  3. Step 3: Cross multiply
    336,020.80x = 504,020.40 × 111,391.60
  4. Step 4: Simplify right side
    336,020.80x = 56,143,638,788.64
  5. Step 5: Solve for x
    x = 56,143,638,788.64/336,020.80
  6. Step 6: Final answer
    x = 167,083.82

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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.