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Finding the Fourth Proportional to 103,676.16, 155,597.28 and 53,770.56

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Solution

The fourth proportional to 103,676.16, 155,597.28 and 53,770.56 is: 80,698.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,676.16 : 155,597.28 = 53,770.56 : x
  2. Step 2: Convert to fraction form
    103,676.16/155,597.28 = 53,770.56/x
  3. Step 3: Cross multiply
    103,676.16x = 155,597.28 × 53,770.56
  4. Step 4: Simplify right side
    103,676.16x = 8,366,552,880.08
  5. Step 5: Solve for x
    x = 8,366,552,880.08/103,676.16
  6. Step 6: Final answer
    x = 80,698.91

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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.