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Finding the Fourth Proportional to 103,630.60, 155,522.70 and 68,558.60

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Solution

The fourth proportional to 103,630.60, 155,522.70 and 68,558.60 is: 102,888.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,630.60 : 155,522.70 = 68,558.60 : x
  2. Step 2: Convert to fraction form
    103,630.60/155,522.70 = 68,558.60/x
  3. Step 3: Cross multiply
    103,630.60x = 155,522.70 × 68,558.60
  4. Step 4: Simplify right side
    103,630.60x = 10,662,418,580.22
  5. Step 5: Solve for x
    x = 10,662,418,580.22/103,630.60
  6. Step 6: Final answer
    x = 102,888.71

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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.