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Finding the Fourth Proportional to 93,556, 129,211.92 and 72,589.60

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Solution

The fourth proportional to 93,556, 129,211.92 and 72,589.60 is: 100,254.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,556 : 129,211.92 = 72,589.60 : x
  2. Step 2: Convert to fraction form
    93,556/129,211.92 = 72,589.60/x
  3. Step 3: Cross multiply
    93,556x = 129,211.92 × 72,589.60
  4. Step 4: Simplify right side
    93,556x = 9,379,441,588.03
  5. Step 5: Solve for x
    x = 9,379,441,588.03/93,556
  6. Step 6: Final answer
    x = 100,254.84

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.