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Finding the Fourth Proportional to 103,634.48, 155,535.50 and 53,728.85

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Solution

The fourth proportional to 103,634.48, 155,535.50 and 53,728.85 is: 80,636.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,634.48 : 155,535.50 = 53,728.85 : x
  2. Step 2: Convert to fraction form
    103,634.48/155,535.50 = 53,728.85/x
  3. Step 3: Cross multiply
    103,634.48x = 155,535.50 × 53,728.85
  4. Step 4: Simplify right side
    103,634.48x = 8,356,744,072.34
  5. Step 5: Solve for x
    x = 8,356,744,072.34/103,634.48
  6. Step 6: Final answer
    x = 80,636.72

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.